Dyfyniad APA

Dobzhansky, T., Hecht, M. K., & Steere, W. C. (1968). Evolutionary biology. North Holand Publishing Company.

Dyfyniad Arddull Chicago

Dobzhansky, Theodosius, Max K. Hecht, and William Campbell Steere. Evolutionary Biology. Amsterdam: North Holand Publishing Company, 1968.

Dyfyniad MLA

Dobzhansky, Theodosius, et al. Evolutionary Biology. North Holand Publishing Company, 1968.

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