Gaya APA

Camp, W, G. et al (1991). Managing our natural resources / William G. Camp, Thomas B. Daugherty, Carla Kirts (Ed.ke-2). : .

Gaya MLA

Camp, William, G.. et al. "Managing our natural resources / William G. Camp, Thomas B. Daugherty, Carla Kirts". Ed.ke-2 : , 1991. Textbook.