Livi Bacci, M., & Ipsen, I. (1997). A concise history of world population (2nd edition.). Blackwell.
Cita Chicago Style (17a ed.)Livi Bacci, Massimo, y Ipsen Ipsen. A Concise History of World Population. 2nd edition. Cambridge, Massachusetts: Blackwell, 1997.
Cita MLA (9a ed.)Livi Bacci, Massimo, y Ipsen Ipsen. A Concise History of World Population. 2nd edition. Blackwell, 1997.
Precaución: Estas citas no son 100% exactas.