Dyfyniad APA

University of California Publications in Zoology. University press.

Dyfyniad Arddull Chicago

University of California Publications in Zoology. California: University press.

Dyfyniad MLA

University of California Publications in Zoology. University press.

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