APA (7th ed.) Citation

National Museum of American History. (1990). Official guide to the National Museum of American History. Smithsonian Inst. Press.

Chicago Style (17th ed.) Citation

National Museum of American History. Official Guide to the National Museum of American History. Washington, D.C: Smithsonian Inst. Press, 1990.

MLA (9th ed.) Citation

National Museum of American History. Official Guide to the National Museum of American History. Smithsonian Inst. Press, 1990.