Sobotka, T. (2002). Ten years of rapid fertility changes in the European post - communist countries.
Lua i Stíl Chicago (17ú heag.)Sobotka, Tomas. Ten Years of Rapid Fertility Changes in the European Post - Communist Countries. 2002.
Lua MLA (8ú heag.)Sobotka, Tomas. Ten Years of Rapid Fertility Changes in the European Post - Communist Countries. 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.