APA (7th ed.) Citation

United States. National Park Service. Denver Service Center. Eastern Team & United States. National Park Service. Recreation Resources Assistance Division. (1990). Paved recreation trails of the National Capital Region: Recommendations for improvements and coordination to form a metropolitan multi-use trail system. National Park Service, U.S. Dept. of the Interior.

Chicago Style (17th ed.) Citation

United States. National Park Service. Denver Service Center. Eastern Team and United States. National Park Service. Recreation Resources Assistance Division. Paved Recreation Trails of the National Capital Region: Recommendations for Improvements and Coordination to Form a Metropolitan Multi-use Trail System. Washington, D.C.: National Park Service, U.S. Dept. of the Interior, 1990.

MLA (9th ed.) Citation

United States. National Park Service. Denver Service Center. Eastern Team and United States. National Park Service. Recreation Resources Assistance Division. Paved Recreation Trails of the National Capital Region: Recommendations for Improvements and Coordination to Form a Metropolitan Multi-use Trail System. National Park Service, U.S. Dept. of the Interior, 1990.