Cita APA (7a ed.)

O'Brien, G. G. (2002). The guns and flags project. University of California Press.

Cita Chicago Style (17a ed.)

O'Brien, Geoffrey G. The Guns and Flags Project. Berkeley: University of California Press, 2002.

Cita MLA (8a ed.)

O'Brien, Geoffrey G. The Guns and Flags Project. University of California Press, 2002.