APA-referens (7:e uppl.)

Harrington, M. (1990). Socialism: Past and present. Penguin.

Chicago-referens (17:e uppl.)

Harrington, Michael. Socialism: Past and Present. New York: Penguin, 1990.

MLA-referens (9:e uppl.)

Harrington, Michael. Socialism: Past and Present. Penguin, 1990.