APA (7th ed.) Zitazioa

Guillaume, R., & Ritz, D. (2002). Guillaume: A life. University of Missouri Press.

Chicago Style (17th ed.) Zitazioa

Guillaume, Robert, eta David Ritz. Guillaume: A Life. Columbia: University of Missouri Press, 2002.

MLA (9th ed.) Zitazioa

Guillaume, Robert, eta David Ritz. Guillaume: A Life. University of Missouri Press, 2002.