Παραπομπή APA

Gwatkin, R. B. L. (1977). Fertilization mechanisms in man and mammals.

Παραπομπή Chicago Style

Gwatkin, Ralph B L. Fertilization Mechanisms in Man and Mammals. Plenum Press, New York, 1977.

Παραπομπή MLA

Gwatkin, Ralph B L. Fertilization Mechanisms in Man and Mammals. 1977.