APA (7e ed.) Bronvermelding

Frederick, K. D., & Sedjo, R. A. (1991). America's renewable resources: Historical trends and current challenges. Resources for the Future.

Chicago (17e ed.) Bronvermelding

Frederick, Kenneth D., en Roger A. Sedjo. America's Renewable Resources: Historical Trends and Current Challenges. Washington, D.C.: Resources for the Future, 1991.

MLA (8e ed.) Bronvermelding

Frederick, Kenneth D., en Roger A. Sedjo. America's Renewable Resources: Historical Trends and Current Challenges. Resources for the Future, 1991.