Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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