Cita APA (7a ed.)

Cleland, R. E. (1972). Oenothera. Cytogenetics and evolution (1st edition.). Academic Press.

Cita Chicago Style (17a ed.)

Cleland, Ralph E. Oenothera. Cytogenetics and Evolution. 1st edition. New York: Academic Press, 1972.

Cita MLA (8a ed.)

Cleland, Ralph E. Oenothera. Cytogenetics and Evolution. 1st edition. Academic Press, 1972.