Cita APA (7a ed.)

Stebbins, G. L. (1971). Processes of organic evolution (2nd. ed.). Prentice-Hall.

Cita Chicago Style (17a ed.)

Stebbins, G. Ledyard. Processes of Organic Evolution. 2nd. ed. Englewood Cliffs: Prentice-Hall, 1971.

Cita MLA (8a ed.)

Stebbins, G. Ledyard. Processes of Organic Evolution. 2nd. ed. Prentice-Hall, 1971.