APA (7th ed.) Citation

Knapp, R. F., & Hartsoe, C. (1979). Play for America: The National Recreation Association, 1906-1965. National Recreation & Park Association.

Chicago Style (17th ed.) Citation

Knapp, Richard F., and Charles Hartsoe. Play for America: The National Recreation Association, 1906-1965. Arlington, Va.: National Recreation & Park Association, 1979.

MLA (9th ed.) Citation

Knapp, Richard F., and Charles Hartsoe. Play for America: The National Recreation Association, 1906-1965. National Recreation & Park Association, 1979.