Dyfyniad APA

Bevans, M. H. (1956). Tthe book of reptiles and amphibians. Doubleday.

Dyfyniad Arddull Chicago

Bevans, Mihael H. Tthe Book of Reptiles and Amphibians. Garden City, N.Y: Doubleday, 1956.

Dyfyniad MLA

Bevans, Mihael H. Tthe Book of Reptiles and Amphibians. Doubleday, 1956.

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