APA (7th ed.) Citation

Douglass, R. W. (1969). Forest recreation ([1st ed.].). Pergamon Press.

Chicago Style (17th ed.) Citation

Douglass, Robert W. Forest Recreation. [1st ed.]. Oxford, New York: Pergamon Press, 1969.

MLA (8th ed.) Citation

Douglass, Robert W. Forest Recreation. [1st ed.]. Pergamon Press, 1969.