Haupt, A., & Kane, T. T. (1998). The Population Reference Bureau's population handbook (4th international ed.). Population Reference Bureau.
Cita Chicago (17th ed.)Haupt, Arthur, i Thomas T. Kane. The Population Reference Bureau's Population Handbook. 4th international ed. Washington, DC: Population Reference Bureau, 1998.
Cita MLA (8th ed.)Haupt, Arthur, i Thomas T. Kane. The Population Reference Bureau's Population Handbook. 4th international ed. Population Reference Bureau, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.