Παραπομπή APA

Bunning, E. (1973). Physiological clock: Circadian rhythms and biological chronometry (3.).

Παραπομπή Chicago Style

Bunning, Erwin. Physiological Clock: Circadian Rhythms and Biological Chronometry. 3. English Universities Press Ltd., London, 1973.

Παραπομπή MLA

Bunning, Erwin. Physiological Clock: Circadian Rhythms and Biological Chronometry. 3. 1973.