Citazione APA

Chapman, G., & Barker, W. B. (1964). Zoology: For intermediate students. Longmans.

Stile di citazione Chicago

Chapman, G., e W. B. Barker. Zoology: For Intermediate Students. London: Longmans, 1964.

Citazione MLA

Chapman, G., e W. B. Barker. Zoology: For Intermediate Students. Longmans, 1964.