Cita APA

Raven, P. H., Curtis, H., & Evert, R. F. (1981). Biology of plants. New York, N.Y.: Worth Publishers.

Chicago Style Citation

Raven, Peter H., Helena Curtis, i Ray Franklin Evert. Biology of Plants. New York, N.Y.: Worth Publishers, 1981.

Cita MLA

Raven, Peter H., Helena Curtis, i Ray Franklin Evert. Biology of Plants. New York, N.Y.: Worth Publishers, 1981.