APA (7th ed.) Citation

Chapman, G., & Barker, W. (1964). Zoology for intermediate students. Longmans.

Chicago Style (17th ed.) Citation

Chapman, G., and W.B Barker. Zoology for Intermediate Students. London: Longmans, 1964.

MLA (9th ed.) Citation

Chapman, G., and W.B Barker. Zoology for Intermediate Students. Longmans, 1964.