Gaya APA

Cubbage, F, W. et al (1993). Forest resource policy / Frederick W. Cubbage, Jay O'Laughlin, Charles S. Bullogh III . New York: Wiley.

Gaya MLA

Cubbage, Frederick, W.. et al. "Forest resource policy / Frederick W. Cubbage, Jay O'Laughlin, Charles S. Bullogh III". New York: Wiley, 1993. Textbook.