Cita APA (7th ed.)

Holechek, J. (2003). Natural resources: Ecology, economics, and policy (2nd ed.). Prentice Hall.

Cita Chicago (17th ed.)

Holechek, Jerry. Natural Resources: Ecology, Economics, and Policy. 2nd ed. Upper Saddle River, N.J: Prentice Hall, 2003.

Cita MLA (9th ed.)

Holechek, Jerry. Natural Resources: Ecology, Economics, and Policy. 2nd ed. Prentice Hall, 2003.