United Nations Population Fund. UNFPA state of world population, 2007: Unleashing the potential of urban growth.
Cita Chicago Style (17a ed.)United Nations Population Fund. UNFPA State of World Population, 2007: Unleashing the Potential of Urban Growth.
Cita MLA (9a ed.)United Nations Population Fund. UNFPA State of World Population, 2007: Unleashing the Potential of Urban Growth.
Precaución: Estas citas no son 100% exactas.