Dyfyniad APA

Pettit, G. R., Pierson, F. H., & Herald, C. L. (1994). Anticancer drugs from animals ,plants, and microogranisms. Wiley.

Dyfyniad Arddull Chicago

Pettit, George R., Fiona Hogan Pierson, and Cherry L. Herald. Anticancer Drugs from Animals ,plants, and Microogranisms. New york: Wiley, 1994.

Dyfyniad MLA

Pettit, George R., et al. Anticancer Drugs from Animals ,plants, and Microogranisms. Wiley, 1994.

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