APA (7th ed.) Citation

Zon, R., & Sparhawk, W. N. (1923). Forest resources of the world. McGraw-Hill Book Co..

Chicago Style (17th ed.) Citation

Zon, Raphael, and William N. Sparhawk. Forest Resources of the World. New York: McGraw-Hill Book Co., 1923.

MLA (9th ed.) Citation

Zon, Raphael, and William N. Sparhawk. Forest Resources of the World. McGraw-Hill Book Co., 1923.