APA (7th ed.) Zitazioa

Georgacarakos, G., & Smith, R. (1979). Elementary formal logic. McGraw-Hill.

Chicago Style (17th ed.) Zitazioa

Georgacarakos, G.N, eta Robin Smith. Elementary Formal Logic. New York: McGraw-Hill, 1979.

MLA (9th ed.) Zitazioa

Georgacarakos, G.N, eta Robin Smith. Elementary Formal Logic. McGraw-Hill, 1979.