Hardin, G., Gillespie, E. L., & Warshaw, H. (1966). Biology: Its principles and implications (2nd ed.). San Francisco: W. H. Freeman.
Παραπομπή Chicago StyleHardin, Garrett, Evan L. Gillespie, and Howard Warshaw. Biology: Its Principles and Implications. 2nd ed. San Francisco: W. H. Freeman, 1966.
Παραπομπή MLAHardin, Garrett, Evan L. Gillespie, and Howard Warshaw. Biology: Its Principles and Implications. 2nd ed. San Francisco: W. H. Freeman, 1966.
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