APA (7th ed.) Citation

National Portrait Gallery (Smithsonian Institution) & Smithsonian Institution. Traveling Exhibition Service. (2009). The mask of Lincoln: An educational resource from the Smithsonian Institution. Smithsonian Institution.

Chicago Style (17th ed.) Citation

National Portrait Gallery (Smithsonian Institution) and Smithsonian Institution. Traveling Exhibition Service. The Mask of Lincoln: An Educational Resource from the Smithsonian Institution. [Washington, D.C.]: Smithsonian Institution, 2009.

MLA (9th ed.) Citation

National Portrait Gallery (Smithsonian Institution) and Smithsonian Institution. Traveling Exhibition Service. The Mask of Lincoln: An Educational Resource from the Smithsonian Institution. Smithsonian Institution, 2009.

Warning: These citations may not always be 100% accurate.