The National Archives in the nation's capital :
information for researchers.
APA Citation
United States. National Archives and Records Administration. (2009). The National Archives in the nation's capital: information for researchers. Rev. 2009. Washington, DC: National Archives and Records Administration.
MLA Citation
United States. National Archives and Records Administration. The National Archives In the Nation's Capital: Information for Researchers. Rev. 2009. Washington, DC: National Archives and Records Administration, 2009.
Warning: These citations may not always be complete (especially for serials).