American Association of Leisure and Recreation & Pelegrino, D. A. (1975). What recreation research says to the recreation practitioner. American Association of Leisure and Recreation of the American Alliance for Health.
Chicago-viite (17. p.)American Association of Leisure and Recreation ja Donald A. Pelegrino. What Recreation Research Says to the Recreation Practitioner. Washington: American Association of Leisure and Recreation of the American Alliance for Health, 1975.
MLA-viite (9. p.)American Association of Leisure and Recreation ja Donald A. Pelegrino. What Recreation Research Says to the Recreation Practitioner. American Association of Leisure and Recreation of the American Alliance for Health, 1975.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.