Ruppin, A. The Jewish population of the world. Group dynamics : research and theory.
Lua i Stíl Chicago (17ú heag.)Ruppin, Arthur. "The Jewish Population of the World." Group Dynamics : Research and Theory .
Lua MLA (8ú heag.)Ruppin, Arthur. "The Jewish Population of the World." Group Dynamics : Research and Theory, .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.