Dyfyniad APA

Hepher, B., & Pruginin, Y. (1981). Commercial fish farming. Wiley.

Dyfyniad Arddull Chicago

Hepher, Balfour, and Yoel Pruginin. Commercial Fish Farming. New York: Wiley, 1981.

Dyfyniad MLA

Hepher, Balfour, and Yoel Pruginin. Commercial Fish Farming. Wiley, 1981.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.