de Jong, A. (1998). Long-term fertility scenarios for the countries of the European economic area. European Commission.
Chicago-referens (17:e uppl.)de Jong, Andries. Long-term Fertility Scenarios for the Countries of the European Economic Area. Luxembourg: European Commission, 1998.
MLA-referens (8:e uppl.)de Jong, Andries. Long-term Fertility Scenarios for the Countries of the European Economic Area. European Commission, 1998.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.