APA-referens (7:e uppl.)

Polenberg, R. (1980). One nation divisible: Class, race, and ethnicity in the United States since 1938. Penguin Books.

Chicago-referens (17:e uppl.)

Polenberg, Richard. One Nation Divisible: Class, Race, and Ethnicity in the United States Since 1938. New York, NY: Penguin Books, 1980.

MLA-referens (9:e uppl.)

Polenberg, Richard. One Nation Divisible: Class, Race, and Ethnicity in the United States Since 1938. Penguin Books, 1980.