Dyfyniad APA

The Academy of Natural Sciences. Proceedings of Natural Sciences of Philadephia. The Academy of Natural Sciences.

Dyfyniad Arddull Chicago

The Academy of Natural Sciences. Proceedings of Natural Sciences of Philadephia. Philadephia: The Academy of Natural Sciences.

Dyfyniad MLA

The Academy of Natural Sciences. Proceedings of Natural Sciences of Philadephia. The Academy of Natural Sciences.

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