Images of an Era: The American Poster 1945-75.

MLA

Cogswell, Margaret, et al. Images of an Era: The American Poster 1945-75. Washington: National Collection of Fine Arts - Smithsonian Institution, 1975.

APA

Cogswell, M., Glaser, M., Ashton, D., & Gowans, A. (1975). Images of an Era: The American Poster 1945-75. Washington: National Collection of Fine Arts - Smithsonian Institution.

Chicago

Cogswell, Margaret, Milton Glaser, Dore Ashton, and Alan Gowans. Images of an Era: The American Poster 1945-75. Washington: National Collection of Fine Arts - Smithsonian Institution, 1975.