Cita APA (7th ed.)
MacGregor, G. (1957). The Vatican revolution. Beacon Press.
Cita Chicago (17th ed.)
MacGregor, Geddes. The Vatican Revolution. Boston: Beacon Press, 1957.
Cita MLA (9th ed.)
MacGregor, Geddes. The Vatican Revolution. Beacon Press, 1957.
Atenció: Aquestes cites poden no estar 100% correctes.