Purdy, V. C., Reed, D. J., & Hurd, P. (1968). Presidential portraits. Published for the National Portrait Gallery by the Smithsonian Institution Press.
Chicago Style (17th ed.) CitationPurdy, Virginia Cardwell, Daniel J. Reed, and Peter Hurd. Presidential Portraits. Washington: Published for the National Portrait Gallery by the Smithsonian Institution Press, 1968.
MLA (9th ed.) CitationPurdy, Virginia Cardwell, et al. Presidential Portraits. Published for the National Portrait Gallery by the Smithsonian Institution Press, 1968.
Warning: These citations may not always be 100% accurate.