APA (7th ed.) Zitazioa

Churchill, W. S. (1951). Closing the ring (1a. ed.). Houghton Mifflin Company.

Chicago Style (17th ed.) Zitazioa

Churchill, Winston S. Closing the Ring. 1a. ed. Boston: Houghton Mifflin Company, 1951.

MLA (9th ed.) Zitazioa

Churchill, Winston S. Closing the Ring. 1a. ed. Houghton Mifflin Company, 1951.