APA (7th ed.) Citation

United States. National Park Service. (1941). Park Use Studies and Demonstrations, Part I. A Report Covering Attendance, Activities, Participation, and Preference Studies Conducted in Cooperation with the State Park Agencies in 248 State Parks and Related Recreational Areas in 1938, Part II. A Report Covering the Organization, Conduct, and Results of Park Use Program Demonstrations in 1939. [s.n.].

Chicago Style (17th ed.) Citation

United States. National Park Service. Park Use Studies and Demonstrations, Part I. A Report Covering Attendance, Activities, Participation, and Preference Studies Conducted in Cooperation with the State Park Agencies in 248 State Parks and Related Recreational Areas in 1938, Part II. A Report Covering the Organization, Conduct, and Results of Park Use Program Demonstrations in 1939. [Washington]: [s.n.], 1941.

MLA (9th ed.) Citation

United States. National Park Service. Park Use Studies and Demonstrations, Part I. A Report Covering Attendance, Activities, Participation, and Preference Studies Conducted in Cooperation with the State Park Agencies in 248 State Parks and Related Recreational Areas in 1938, Part II. A Report Covering the Organization, Conduct, and Results of Park Use Program Demonstrations in 1939. [s.n.], 1941.