Needham, J. G. (1962). A guide to the study of freshwater biology (5th ed.). Holden-Day, Inc.
Chicago Style aipamenaNeedham, James G. A Guide to the Study of Freshwater Biology. 5th ed. San Francisco: Holden-Day, Inc, 1962.
MLA aipamenaNeedham, James G. A Guide to the Study of Freshwater Biology. 5th ed. Holden-Day, Inc, 1962.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.