Cita APA (7th ed.)

Ayala, F. J., & Valentine, J. W. (1979). Evolving: The theory and processes of organic evolution. The Benjamin/ Cummings.

Cita Chicago (17th ed.)

Ayala, Francisco Jase, i James W. Valentine. Evolving: The Theory and Processes of Organic Evolution. Menlo Park, Calif: The Benjamin/ Cummings, 1979.

Cita MLA (9th ed.)

Ayala, Francisco Jase, i James W. Valentine. Evolving: The Theory and Processes of Organic Evolution. The Benjamin/ Cummings, 1979.