Bjork, W. B., & Schraer, W. D. (1987). Biology: The study of life (2nd ed., Teacher's ed.). CEBCO : Allyn and Bacon.
Citace podle Chicago (17th ed.)Bjork, Warren B., a William D. Schraer. Biology: The Study of Life. 2nd ed., Teacher's ed. Newton, Mass.: CEBCO : Allyn and Bacon, 1987.
Citace podle MLA (8th ed.)Bjork, Warren B., a William D. Schraer. Biology: The Study of Life. 2nd ed., Teacher's ed. CEBCO : Allyn and Bacon, 1987.
Upozornění: Tyto citace jsou generovány automaticky. Nemusí být zcela správně podle citačních pravidel..