APA استشهاد

Frings, H. (1970). Concepts of zoology. The Macmillan company.

استشهاد بنمط شيكاغو

Frings, Hubert. Concepts of Zoology. London: The Macmillan company, 1970.

MLA استشهاد

Frings, Hubert. Concepts of Zoology. The Macmillan company, 1970.