Cita APA (7th ed.)

Needham, J. G., & Needham, P. R. (1962). A guide to the study of fresh-water biology (5th ed.). Holden-Day.

Cita Chicago (17th ed.)

Needham, James George, i Paul Robert Needham. A Guide to the Study of Fresh-water Biology. 5th ed. San Francisco: Holden-Day, 1962.

Cita MLA (9th ed.)

Needham, James George, i Paul Robert Needham. A Guide to the Study of Fresh-water Biology. 5th ed. Holden-Day, 1962.