Cita APA (7th ed.)

Willoughby, S. (1999). Manual of salmonid farming. Fishing News Books.

Cita Chicago (17th ed.)

Willoughby, Stephen. Manual of Salmonid Farming. Oxford: Fishing News Books, 1999.

Cita MLA (9th ed.)

Willoughby, Stephen. Manual of Salmonid Farming. Fishing News Books, 1999.