Παραπομπή APA

Saunders, D. S. (1977). Introduction to biological rhythms. Blackie and Son Ltd.

Παραπομπή Chicago Style

Saunders, D S. Introduction to Biological Rhythms. Glasgow: Blackie and Son Ltd, 1977.

Παραπομπή MLA

Saunders, D S. Introduction to Biological Rhythms. Blackie and Son Ltd, 1977.