APA (7th ed.) Citation

Richards, B. J. (1990). Language development and individual differences: A study of auxiliary verb learning. Cambridge University Press.

Chicago Style (17th ed.) Citation

Richards, Brian J. Language Development and Individual Differences: A Study of Auxiliary Verb Learning. Cambridge [England] ; New York: Cambridge University Press, 1990.

MLA (8th ed.) Citation

Richards, Brian J. Language Development and Individual Differences: A Study of Auxiliary Verb Learning. Cambridge University Press, 1990.