Dyfyniad APA

(2007). The Nervous system, the skin, the senses. World Book, Inc.

Dyfyniad Arddull Chicago

The Nervous System, the Skin, the Senses. Chicago, Ill: World Book, Inc, 2007.

Dyfyniad MLA

The Nervous System, the Skin, the Senses. World Book, Inc, 2007.

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