APA (7th ed.) Citation

Educational Consulting Service (Calif.) & United States. National Park Service. (1969). NEED: Pre-site lessons, fifth/sixth grade : a National Park Service program. The Service.

Chicago Style (17th ed.) Citation

Educational Consulting Service (Calif.) and United States. National Park Service. NEED: Pre-site Lessons, Fifth/sixth Grade : A National Park Service Program. [Orinda, Calif.]: The Service, 1969.

MLA (9th ed.) Citation

Educational Consulting Service (Calif.) and United States. National Park Service. NEED: Pre-site Lessons, Fifth/sixth Grade : A National Park Service Program. The Service, 1969.