Cita APA (7a ed.)

Duerr, W. A. (1960). Fundamentals of forestry economics. McGraw-Hill.

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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