APA (7th ed.) Zitazioa

Duerr, W. A. (1960). Fundamentals of Forestry economics.: William A. Duerr. McGraw-Hill.

Chicago Style (17th ed.) Zitazioa

Duerr, William A. Fundamentals of Forestry Economics.: William A. Duerr. New York: McGraw-Hill, 1960.

MLA (9th ed.) Zitazioa

Duerr, William A. Fundamentals of Forestry Economics.: William A. Duerr. McGraw-Hill, 1960.