Lutz, W., Vaupel, J. W., & Ahlburg, D. A. (1999). Frontiers of population forecasting. Population Council.
Cita Chicago Style (17a ed.)Lutz, Wolfgang, James W. Vaupel, y Dennis A. Ahlburg. Frontiers of Population Forecasting. New York: Population Council, 1999.
Cita MLA (8a ed.)Lutz, Wolfgang, et al. Frontiers of Population Forecasting. Population Council, 1999.
Precaución: Estas citas no son 100% exactas.