APA (7th ed.) Citation

United States. National Park Service. (1981). Fire Island National Seashore, New York (Scale [ca. 1:90,000].). The Service.

Chicago Style (17th ed.) Citation

United States. National Park Service. Fire Island National Seashore, New York. Scale [ca. 1:90,000]. [Washington, D.C.?]: The Service, 1981.

MLA (9th ed.) Citation

United States. National Park Service. Fire Island National Seashore, New York. Scale [ca. 1:90,000]. The Service, 1981.