APA (7th ed.) Citation

Henkel, D. D. (1981). Directory of college/university programs in recreation, leisure services and resources 1981. National Recreation and Park Association.

Chicago Style (17th ed.) Citation

Henkel, Donald Dale. Directory of College/university Programs in Recreation, Leisure Services and Resources 1981. Arlington, Va.: National Recreation and Park Association, 1981.

MLA (9th ed.) Citation

Henkel, Donald Dale. Directory of College/university Programs in Recreation, Leisure Services and Resources 1981. National Recreation and Park Association, 1981.