APA (7th ed.) Citation

American Federation of Arts, Breitenbach, E., & Cogswell, M. (1968). The American poster: An exhibition. American Federation of Arts.

Chicago Style (17th ed.) Citation

American Federation of Arts, Edgar Breitenbach, and Margaret Cogswell. The American Poster: An Exhibition. New York: American Federation of Arts, 1968.

MLA (9th ed.) Citation

American Federation of Arts, et al. The American Poster: An Exhibition. American Federation of Arts, 1968.