APA-referens (7:e uppl.)

Carroll, P. N., & Noble, D. W. (1977). The free and the unfree: A new history of the United States. Penguin Books Ltd.

Chicago-referens (17:e uppl.)

Carroll, Peter N., och David W. Noble. The Free and the Unfree: A New History of the United States. Harmondsworth, Middlesex, England: Penguin Books Ltd, 1977.

MLA-referens (9:e uppl.)

Carroll, Peter N., och David W. Noble. The Free and the Unfree: A New History of the United States. Penguin Books Ltd, 1977.