Cita APA (7th ed.)
(1971). Population Index. Office of Population Research, Princeton Univ.
Cita Chicago (17th ed.)
Population Index. Princeton, (N.J.): Office of Population Research, Princeton Univ, 1971.
Cita MLA (9th ed.)
Population Index. Office of Population Research, Princeton Univ, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.