Citazione APA

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

Stile di citazione Chicago

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

Citazione MLA

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