Cita APA (7th ed.)

Turner, R. (1987). Thinkers of the Twenthieth century (2nd ed.). St. James Press.

Cita Chicago (17th ed.)

Turner, Roland. Thinkers of the Twenthieth Century. 2nd ed. Chicago : London: St. James Press, 1987.

Cita MLA (9th ed.)

Turner, Roland. Thinkers of the Twenthieth Century. 2nd ed. St. James Press, 1987.