Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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