Παραπομπή APA

(1962). Public outdoor recreation areas: Acreage, use, potential. Washington, D.C: Outdoor Recreation for America.

Παραπομπή Chicago Style

Public Outdoor Recreation Areas: Acreage, Use, Potential. Washington, D.C: Outdoor Recreation for America, 1962.

Παραπομπή MLA

Public Outdoor Recreation Areas: Acreage, Use, Potential. Washington, D.C: Outdoor Recreation for America, 1962.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.