• Biber, Douglas and Gray, Bethany in press. 'Identifying multi-dimensional patterns of variation across registers', in Krug, Manfred and Schlüter, Julia (eds.), Research methods in language variation and change. Cambridge: Cambridge University Press.
• Biber, Douglas and Finegan, Edward 1989. 'Drift and the evolution of English style: a history of three genres', Language 65: 487 – 517.
• Biber, Douglas and Conrad, Susan 2009. Register, genre, and style. Cambridge: Cambridge University Press.
• Biber, Douglas, Johansson, Stig, Leech, Geoffrey, Conrad, Susan and Finegan, Eward 1999. Longman grammar of spoken and written English. Harlow: Pearson Education.
• Biber, Douglas 1988. Variation across speech and writing. Cambridge: Cambridge University Press.
• Biber, Douglas 1995. Dimensions of register variation: a cross-linguistic comparison. Cambridge: Cambridge University Press.
• Biber, Douglas 2006. University language: a corpus-based study of spoken and written registers. Studies in Corpus Linguistics 23. Amsterdam and Philadelphia: John Benjamins.
• Biber, Douglas, Conrad, Susan and Reppen, Randi 1998. Corpus linguistics: investigating language structure and use. Cambridge: Cambridge University Press.
• Conrad, Susan and Biber, Douglas (eds.) 2001. Variation in English: multi-dimensional studies. Harlow: Pearson Education Limited.

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