APA (7th ed.) Zitazioa

Ricker, W. E. (1968). Methods for Assessment of fish production in fresh waters. International Biological Programme.

Chicago Style (17th ed.) Zitazioa

Ricker, W. E. Methods for Assessment of Fish Production in Fresh Waters. Londres: International Biological Programme, 1968.

MLA (9th ed.) Zitazioa

Ricker, W. E. Methods for Assessment of Fish Production in Fresh Waters. International Biological Programme, 1968.