United States. National Ocean Service. (1982). Airport obstruction chart (7th ed., field surveys Apr. 1982, published Nov. 1982.). U.S. Department of Commerce.
Chicago Style (17th ed.) CitationUnited States. National Ocean Service. Airport Obstruction Chart. 7th ed., field surveys Apr. 1982, published Nov. 1982. Washington, D.C.: U.S. Department of Commerce, 1982.
MLA (9th ed.) CitationUnited States. National Ocean Service. Airport Obstruction Chart. 7th ed., field surveys Apr. 1982, published Nov. 1982. U.S. Department of Commerce, 1982.
Warning: These citations may not always be 100% accurate.