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APA-referensUnited Nations Population Fund, United Nations. Economic Commission for Europe, Delgado, M., & Castro Martin, T. (1999). Fertility and family surveys in countries of the ECE region: Standard country report. Spain. United Nations.
Chicago-stil citatUnited Nations Population Fund, United Nations. Economic Commission for Europe, Margarita Delgado, och Teresa Castro Martin. Fertility and Family Surveys in Countries of the ECE Region: Standard Country Report. Spain. New York [N.Y.]: United Nations, 1999.
MLA-referensUnited Nations Population Fund, et al. Fertility and Family Surveys in Countries of the ECE Region: Standard Country Report. Spain. United Nations, 1999.
Harvard-stil citatUnited Nations Population Fund, United Nations. Economic Commission for Europe, Delgado, M. & Castro Martin, T. 1999. Fertility and family surveys in countries of the ECE region: Standard country report. Spain. New York [N.Y.]: United Nations.