2019 “Variation and Mental Representation” In: D. Lightfoot and J. Havenhill, eds., Variable properties in language: Their nature and acquisition. Washington DC: Georgetown University Press.
2018 “Variable Grammars: Competence as a statistical abstraction from performance; Constructing theories from data” In: N. Shin & D. Erker, eds. Theoretical Primitives in Linguistic Inquiry: Papers in Honor of Ricardo Otheguy“. Amsterdam: John Benjamins.
2017 “The African Diaspora in Latin America” In C. Cutler, Z. Vrzic & P. Angermeyer, eds. Language Contact in Africa and the African Diaspora in the Americas. In honor of John V. Singler. Amsterdam: John Benjamins.
2016 “Coherence, covariation, and bricolage.” Lingua Special Issue vol 172-173:1-9. (Co-editor, with Frans Hinskens).
2015 “The effect of salience on co-variation in Brazilian Portuguese.” University of Pennsylvania Working Papers in Linguistics 21:2, Article 18. (second author, w. Livia Oushiro)
2014 “Linking usage and grammar: Generative phonology, exemplar theory, and variable rules.” Lingua 142:57-65.
2014 “Variation and change in Latin American Spanish and Portuguese.” In A. Carvalho and P. Amaral, eds. Portuguese/Spanish Interfaces. Philadelphia: Benjamins.
2013 “The cognitive coherence of sociolects: How do speakers handle multiple sociolinguistic variables?” Journal of Pragmatics 52:63-71.
2013 “Words and numbers: statistical analysis in sociolinguistics.” In J. Holmes and K. Hazen, eds. Research Methods in Sociolinguistics. pp. 194-210. London: Wiley/Blackwell.
2012 “The role of lexical frequency in syntactic variability: Variable subject personal pronoun expression in Spanish.” Language 88(3): 526-557. (second author, with Daniel Erker).
2011 “Variation and Change.” In W. Maguire and A. McMahon, eds. Analyzing variation in English, pp. 178-198. Cambridge: Cambridge University Press.
2011 “Variability.” In M. Van Oostendoorp, C.J. Ewen, E. Hume, K. Rice and C. Ewen, eds., The Blackwell Companion to Phonology. London: Wiley/Blackwell.
2010 “Sociolinguistics and Formal Linguistics.” In: Wodak, R., B. Johnstone & P. Kerswill (eds.). The Sage Handbook of Sociolinguistics. Sage Publishing.
2008 “Endangered Language Varieties.” In: King, K. A., Shilling-Estes, N., Lou, J., Fogle, L., and Soukup, B. (eds). Sustaining linguistic diversity: Endangered and minority languages and language varieties. Georgetown University Press. 53-66.
2007 “Variation and Phonological Theory” In: R. Bayley & C. Lucas, eds. Sociolinguistic Variation: Theories, Methods, and Analysis. Cambridge: Cambridge University Press. 5-23
1997 “Violable is variable: Optimality theory and linguistic variation.” Language Variation and Change. 9:333-348.
1997 “The obligatory contour principle and sociolinguistic variation.” Language Variation and Change 9:149-164. (lead author; with Charles Boberg).
1996 “Post-Saussurean linguistics: Towards an integrated theory of language.” In M. Meyerhoff, ed. (N)WAVES and MEANS: A selection of papers from NWAVE 24 (University of Pennsylvania Working Papers in Linguistics 3:1), 1-24.
1996 “Form and function in linguistic variation“. In G. Guy, C. Feagin, J. Baugh, & D. Schiffrin, eds., Towards a Social Science of Language: Papers in honour of William Labov, vol. 1, 221-252. Amsterdam & Philadelphia: John Benjamins.
1995 “On the choice of relative pronouns in English.” Gregory R. Guy & Robert Bayley. American Speech 70 (2) 148-162.
1992 “Contextual conditioning in variable lexical phonology.” Language Variation and Change 3: 223-239.
1991 “Explanation in variable phonology: An exponential model of morphological constraints” Language Variation and Change 3:1-22.
1990 “The sociolinguistic types of language.” Diachronica VII:1, 47-67.
1990 “The development of a morphological class.” With Sally Boyd. Language Variation and Change. 2:1-18.
1988 “Advanced VARBRUL analysis.” In K. Ferrara, B. Brown, K. Walters & J. Baugh, eds. Linguistic change and contact: NWAV-XVI, 124-136. (Texas Linguistic Forum 30). Austin: University of Texas, Department of Linguistics.
1986 “An intonational change in progress in Australian English.” Language in Society 15 (1) 23-52. (Lead author; with B. Horvath, J. Vonwiller, E. Daisley, & I. Rogers.)
1981 “Linguistic Variation in Brazilian Portuguese” Ph.D. dissertation, University of Pennsylvania. available from University Microfilms International.
1980 “Variation in the group and the individual: the case of final stop deletion.” In W. Labov, ed., Locating Language in Time and Space, 1-36, New York: Academic Press.