APA (7th ed.) Citation

Harker, J. E. (1964). The physiology of diurnal rhythms. Cambridge Univ. Pr.

Chicago Style (17th ed.) Citation

Harker, Janet E. The Physiology of Diurnal Rhythms. Cambridge: Cambridge Univ. Pr, 1964.

MLA (9th ed.) Citation

Harker, Janet E. The Physiology of Diurnal Rhythms. Cambridge Univ. Pr, 1964.

Warning: These citations may not always be 100% accurate.