Cita APA (7a ed.)

Bjork, W. B., & Schraer, W. D. (1987). Biology: The study of life (2nd ed., Teacher's ed.). CEBCO : Allyn and Bacon.

Cita Chicago Style (17a ed.)

Bjork, Warren B., y William D. Schraer. Biology: The Study of Life. 2nd ed., Teacher's ed. Newton, Mass.: CEBCO : Allyn and Bacon, 1987.

Cita MLA (8a ed.)

Bjork, Warren B., y William D. Schraer. Biology: The Study of Life. 2nd ed., Teacher's ed. CEBCO : Allyn and Bacon, 1987.