Cita APA (7a ed.)

Davis, G. E., & Halvorson, W. L. (1996). Science and Ecosystem Management in the National Parks. University of Arizona Press.

Cita Chicago Style (17a ed.)

Davis, Gary E., y William L. Halvorson. Science and Ecosystem Management in the National Parks. Tucson: University of Arizona Press, 1996.

Cita MLA (8a ed.)

Davis, Gary E., y William L. Halvorson. Science and Ecosystem Management in the National Parks. University of Arizona Press, 1996.