Peoples' News Service (PNS). (1976). Peoples' News Service. London: PNS.
Cita Chicago (17th ed.)Peoples' News Service (PNS). Peoples' News Service. London: PNS, 1976.
Cita MLA (8th ed.)Peoples' News Service (PNS). Peoples' News Service. London: PNS, 1976.
Atenció: Aquestes cites poden no estar 100% correctes.