Cita APA (7a ed.)

Otto, J. H., & Towle, A. (1969). Modern biology. Rinehart and Wiston.

Cita Chicago Style (17a ed.)

Otto, James Howard, y Albert Towle. Modern Biology. New York: Rinehart and Wiston, 1969.

Cita MLA (9a ed.)

Otto, James Howard, y Albert Towle. Modern Biology. Rinehart and Wiston, 1969.