APA (7th ed.) Citation

Lock, A., & Fisher, E. (1984). Language development: A reader. Croom Helm.

Chicago Style (17th ed.) Citation

Lock, Andrew, and Eunice Fisher. Language Development: A Reader. London: Croom Helm, 1984.

MLA (9th ed.) Citation

Lock, Andrew, and Eunice Fisher. Language Development: A Reader. Croom Helm, 1984.