Cita APA (7a ed.)
Quennell, P. (1951). History today. History Today Ltd..
Cita Chicago Style (17a ed.)
Quennell, Peter. History Today. London: History Today Ltd., 1951.
Cita MLA (9a ed.)
Quennell, Peter. History Today. History Today Ltd., 1951.
Precaución: Estas citas no son 100% exactas.