APA (7th ed.) Citation

United States. National Park Service. Northeast Region. Park Planning & Special Studies Division. Boston Office. (2011). Blackstone River Valley. National Park Service, Northeast Region/Boston Office, Park Planning and Special Studies.

Chicago Style (17th ed.) Citation

United States. National Park Service. Northeast Region. Park Planning & Special Studies Division. Boston Office. Blackstone River Valley. Boston, Mass.: National Park Service, Northeast Region/Boston Office, Park Planning and Special Studies, 2011.

MLA (9th ed.) Citation

United States. National Park Service. Northeast Region. Park Planning & Special Studies Division. Boston Office. Blackstone River Valley. National Park Service, Northeast Region/Boston Office, Park Planning and Special Studies, 2011.