Dyfyniad APA

Wexler, P., & Gad, S. C. (1998). Encyclopedia of toxicology (3rd ed.). Academic Press.

Dyfyniad Arddull Chicago

Wexler, Philip, and Shayne C. Gad. Encyclopedia of Toxicology. 3rd ed. San Diego: Academic Press, 1998.

Dyfyniad MLA

Wexler, Philip, and Shayne C. Gad. Encyclopedia of Toxicology. 3rd ed. Academic Press, 1998.

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