APA (7th ed.) Citation

United States. National Park Service. Denver Service Center & United States. National Park Service. (1989). Management zones (from the Gateway NRA general management plan), Staten Island Unit/Great Kills Park. [United States National Park Service].

Chicago Style (17th ed.) Citation

United States. National Park Service. Denver Service Center and United States. National Park Service. Management Zones (from the Gateway NRA General Management Plan), Staten Island Unit/Great Kills Park. [Denver, Colo.?]: [United States National Park Service], 1989.

MLA (9th ed.) Citation

United States. National Park Service. Denver Service Center and United States. National Park Service. Management Zones (from the Gateway NRA General Management Plan), Staten Island Unit/Great Kills Park. [United States National Park Service], 1989.