Haupt, A., & kane, T. T. (2000). Population hanbook.
Cita Chicago (17th ed.)Haupt, Arthur, i Thomas T. kane. Population Hanbook. 2000.
Cita MLA (9th ed.)Haupt, Arthur, i Thomas T. kane. Population Hanbook. 2000.
Atenció: Aquestes cites poden no estar 100% correctes.