Dyfyniad APA

ebrary, Inc, & Zhu, Y. (2007). Natural products: Essential resources for human survival. World Scientific.

Dyfyniad Arddull Chicago

ebrary, Inc, and Yi-Zhun Zhu. Natural Products: Essential Resources for Human Survival. New Jersey: World Scientific, 2007.

Dyfyniad MLA

ebrary, Inc, and Yi-Zhun Zhu. Natural Products: Essential Resources for Human Survival. World Scientific, 2007.

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