Dyfyniad APA

Harris, C. L. (1996). Concepts in zoology (2nd ed.). HarperCollins College.

Dyfyniad Arddull Chicago

Harris, C. Leon. Concepts in Zoology. 2nd ed. New York: HarperCollins College, 1996.

Dyfyniad MLA

Harris, C. Leon. Concepts in Zoology. 2nd ed. HarperCollins College, 1996.

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