Cita APA (7a ed.)

Hays, S. P. (2009). The American People and the National Forests: The First Century of the U.S. Forest Service. University of Pittsburgh Press.

Cita Chicago Style (17a ed.)

Hays, Samuel P. The American People and the National Forests: The First Century of the U.S. Forest Service. Pittsburgh, Pa.: University of Pittsburgh Press, 2009.

Cita MLA (8a ed.)

Hays, Samuel P. The American People and the National Forests: The First Century of the U.S. Forest Service. University of Pittsburgh Press, 2009.