APA (7th ed.) Zitazioa

Crognale, G. (1999). Environmental management strategies: The 21st century perspective. Prentice Hall.

Chicago Style (17th ed.) Zitazioa

Crognale, Gabriele. Environmental Management Strategies: The 21st Century Perspective. Englewood Cliffs: Prentice Hall, 1999.

MLA (9th ed.) Zitazioa

Crognale, Gabriele. Environmental Management Strategies: The 21st Century Perspective. Prentice Hall, 1999.