APA ציטוט

Turk, J. (1985). An introduction to environmental studies. Philadelphia: Saunders.

Trích dẫn kiểu Chicago

Turk, Jonathan. An Introduction to Environmental Studies. Philadelphia: Saunders, 1985.

ציטוט MLA

Turk, Jonathan. An Introduction to Environmental Studies. Philadelphia: Saunders, 1985.