Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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