APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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