Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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