(1962). Private outdoor recreation facilities. Washington, D.C: Outdoor Recreation for America.
Παραπομπή Chicago StylePrivate Outdoor Recreation Facilities. Washington, D.C: Outdoor Recreation for America, 1962.
Παραπομπή MLAPrivate Outdoor Recreation Facilities. Washington, D.C: Outdoor Recreation for America, 1962.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.