United States. Bureau of Outdoor Recreation & Smithsonian Institution. Science Information Exchange. Outdoor recreation research. For sale by the Supt. of Docs., U.S. Govt. Print. Off.
Chicago Style (17th ed.) CitationUnited States. Bureau of Outdoor Recreation and Smithsonian Institution. Science Information Exchange. Outdoor Recreation Research. Washington: For sale by the Supt. of Docs., U.S. Govt. Print. Off.
MLA (8th ed.) CitationUnited States. Bureau of Outdoor Recreation and Smithsonian Institution. Science Information Exchange. Outdoor Recreation Research. For sale by the Supt. of Docs., U.S. Govt. Print. Off.
Warning: These citations may not always be 100% accurate.