United Nations Population Fund. UNFPA state of world population, 2007: Unleashing the potential of urban growth.
Citazione stile Chigago Style (17a edizione)United Nations Population Fund. UNFPA State of World Population, 2007: Unleashing the Potential of Urban Growth.
Citatione MLA (9a ed.)United Nations Population Fund. UNFPA State of World Population, 2007: Unleashing the Potential of Urban Growth.
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