Holechek, J. L., Cole, R. A., & Fisher, J. T. (2000). Natural resources: Ecology, economics, and policy. Prentice Hall.
Citazione stile Chigago Style (17a edizione)Holechek, Jerry L., Richard A. Cole, e James T. Fisher. Natural Resources: Ecology, Economics, and Policy. Upper Saddle River, NJ: Prentice Hall, 2000.
Citatione MLA (9a ed.)Holechek, Jerry L., et al. Natural Resources: Ecology, Economics, and Policy. Prentice Hall, 2000.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.