APA aipamena

Willoughby, L. G. (1976). Freshwater biology. Hutchinson.

Chicago Style aipamena

Willoughby, L. G. Freshwater Biology. London: Hutchinson, 1976.

MLA aipamena

Willoughby, L. G. Freshwater Biology. Hutchinson, 1976.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.