Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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