APA Citation

Allen, G. S. (1972). The life history of Douglas fir. Kanada: Environment Canada Foresty Service.

Chicago Style Citation

Allen, George S. The Life History of Douglas Fir. Kanada: Environment Canada Foresty Service, 1972.

MLA Citation

Allen, George S. The Life History of Douglas Fir. Kanada: Environment Canada Foresty Service, 1972.

Warning: These citations may not always be 100% accurate.