APA (7th ed.) Citation

Campbell, E., Evans, F. B., & Bale, S. G., Jr. (1974). Guide to the National Archives of the United States. National Archives and Records Service, General Services Administration.

Chicago Style (17th ed.) Citation

Campbell, E.G, Frank Bernard Evans, and Shelby G. Bale, Jr. Guide to the National Archives of the United States. Washington: National Archives and Records Service, General Services Administration, 1974.

MLA (8th ed.) Citation

Campbell, E.G, et al. Guide to the National Archives of the United States. National Archives and Records Service, General Services Administration, 1974.