Cita APA

Keeton, W. T., Gould, J. L. 1., & Gould, C. G. (1986). Biological science (Fourth edition.). New York: W.W. Norton & Company.

Citación estilo Chicago

Keeton, William T., James L. 1945- Gould, y Carol Grant Gould. Biological Science. Fourth edition. New York: W.W. Norton & Company, 1986.

Cita MLA

Keeton, William T., James L. 1945- Gould, y Carol Grant Gould. Biological Science. Fourth edition. New York: W.W. Norton & Company, 1986.