United Nations Department of Economic and Social Development. (1992). Patterns of fertility in low-fertiligy settings. United Nations.
Παραπομπή σε μορφή Chicago (17η εκδ.)United Nations Department of Economic and Social Development. Patterns of Fertility in Low-fertiligy Settings. New York: United Nations, 1992.
Παραπομπή σε μορφή MLA (8th εκδ.)United Nations Department of Economic and Social Development. Patterns of Fertility in Low-fertiligy Settings. United Nations, 1992.
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