APA (7th ed.) Citation

Williams, J. 1. d., Malmkjaer, K., & Brown, G. (1996). Performance and competence in second language acquisition. Cambridge University Press.

Chicago Style (17th ed.) Citation

Williams, John 1960- de, Kirsten Malmkjaer, and Gillian Brown. Performance and Competence in Second Language Acquisition. Cambridge, United Kingdom: Cambridge University Press, 1996.

MLA (9th ed.) Citation

Williams, John 1960- de, et al. Performance and Competence in Second Language Acquisition. Cambridge University Press, 1996.

Warning: These citations may not always be 100% accurate.