Dyfyniad APA

Bennett, D. P., & Humphries, D. A. (1965). Introduction to field biology. Edward Arnold.

Dyfyniad Arddull Chicago

Bennett, Donald P., and David A. Humphries. Introduction to Field Biology. London: Edward Arnold, 1965.

Dyfyniad MLA

Bennett, Donald P., and David A. Humphries. Introduction to Field Biology. Edward Arnold, 1965.

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