APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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