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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.

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.

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. 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.)

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.