Survey, W. F. Annual report / International Statistical Institute, World Fertility Survey. Voorburg.
Chicago-stil citatSurvey, World Fertility. Annual Report / International Statistical Institute, World Fertility Survey. Voorburg.
MLA-referensSurvey, World Fertility. Annual Report / International Statistical Institute, World Fertility Survey. Voorburg.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.