APA (7th ed.) Citation

National Portrait Gallery (Smithsonian Institution), National Portrait Gallery (Great Britain), & Carr, C. K. (2003). Americans: Paintings and photographs from the National Portrait Gallery, Washington, DC. Watson-Guptill Publications.

Chicago Style (17th ed.) Citation

National Portrait Gallery (Smithsonian Institution), National Portrait Gallery (Great Britain), and Carolyn Kinder Carr. Americans: Paintings and Photographs from the National Portrait Gallery, Washington, DC. New York: Watson-Guptill Publications, 2003.

MLA (9th ed.) Citation

National Portrait Gallery (Smithsonian Institution), et al. Americans: Paintings and Photographs from the National Portrait Gallery, Washington, DC. Watson-Guptill Publications, 2003.