de Jong, A. (1998). Long-term fertility scenarios for the countries of the European economic area. European Commission.
Lua i Stíl Chicago (17ú heag.)de Jong, Andries. Long-term Fertility Scenarios for the Countries of the European Economic Area. Luxembourg: European Commission, 1998.
Lua MLA (8ú heag.)de Jong, Andries. Long-term Fertility Scenarios for the Countries of the European Economic Area. European Commission, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.