Dyfyniad APA

SIMPSON, G. G. (1965). Principles Of Animal Taxonomy. Oxford Book Company.

Dyfyniad Arddull Chicago

SIMPSON, George Gaylord. Principles Of Animal Taxonomy. Oxford Book Company, 1965.

Dyfyniad MLA

SIMPSON, George Gaylord. Principles Of Animal Taxonomy. Oxford Book Company, 1965.

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