Holechek, J., .fisher, j. t., & .cole, r. a. (2000). Natural resources: Ecology, economics, and policy. Prentice Hall.
Citazione stile Chigago Style (17a edizione)Holechek, Jerry, james t. .fisher, e richard a. .cole. Natural Resources: Ecology, Economics, and Policy. Upper Saddle River, NJ: Prentice Hall, 2000.
Citatione MLA (9a ed.)Holechek, Jerry, et al. Natural Resources: Ecology, Economics, and Policy. Prentice Hall, 2000.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.