APA (7th ed.) Citation

Walker, S. (1987). Animal learning: An introduction. Routledge & Kegan Paul.

Chicago Style (17th ed.) Citation

Walker, Stephen. Animal Learning: An Introduction. London ; New York: Routledge & Kegan Paul, 1987.

MLA (9th ed.) Citation

Walker, Stephen. Animal Learning: An Introduction. Routledge & Kegan Paul, 1987.