APA ציטוט
Turk, J. (1989). Introduction to environmental studies (3rd ed.). Saunders college.
Chicago Style (17th ed.) Citation
Turk, Jonathan. Introduction to Environmental Studies. 3rd ed. Philadelphia: Saunders college, 1989.
ציטוט MLA
Turk, Jonathan. Introduction to Environmental Studies. 3rd ed. Saunders college, 1989.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.