APA (7th ed.) Citation

Turk, J. (1985). Introduction to environmental studies (2. ed.). Saunders College Publ.

Chicago Style (17th ed.) Citation

Turk, Jon. Introduction to Environmental Studies. 2. ed. Philadelphia u.a: Saunders College Publ, 1985.

MLA (9th ed.) Citation

Turk, Jon. Introduction to Environmental Studies. 2. ed. Saunders College Publ, 1985.