APA (7th ed.) Citation

Trefethen, J. B., & Sabol, K. J. (1976). The American landscape, 1776-1976: Two centuries of change. Wildlife Management Institute.

Chicago Style (17th ed.) Citation

Trefethen, James B., and Kenneth J. Sabol. The American Landscape, 1776-1976: Two Centuries of Change. [Washington, D.C.]: Wildlife Management Institute, 1976.

MLA (9th ed.) Citation

Trefethen, James B., and Kenneth J. Sabol. The American Landscape, 1776-1976: Two Centuries of Change. Wildlife Management Institute, 1976.