APA (7th ed.) Citation

United States. National Park Service & National Park Service Cooperative Park Studies Unit (Tucson, Ariz.). (1995). Organ Pipe Cactus National Monument, Ecological Monitoring Program, monitoring protocol manual. National Biological Service, Cooperative Park Studies Unit, The University of Arizona ; National Park Service, Organ Pipe Cactus National Monument.

Chicago Style (17th ed.) Citation

United States. National Park Service and Ariz.) National Park Service Cooperative Park Studies Unit (Tucson. Organ Pipe Cactus National Monument, Ecological Monitoring Program, Monitoring Protocol Manual. Tucson, Ariz. : Ajo, Ariz.: National Biological Service, Cooperative Park Studies Unit, The University of Arizona ; National Park Service, Organ Pipe Cactus National Monument, 1995.

MLA (9th ed.) Citation

United States. National Park Service and Ariz.) National Park Service Cooperative Park Studies Unit (Tucson. Organ Pipe Cactus National Monument, Ecological Monitoring Program, Monitoring Protocol Manual. National Biological Service, Cooperative Park Studies Unit, The University of Arizona ; National Park Service, Organ Pipe Cactus National Monument, 1995.