Ruppin, A. The Jewish population of the world. Group dynamics : research and theory.
Citazione stile Chigago Style (17a edizione)Ruppin, Arthur. "The Jewish Population of the World." Group Dynamics : Research and Theory .
Citatione MLA (8a ed.)Ruppin, Arthur. "The Jewish Population of the World." Group Dynamics : Research and Theory, .
Attenzione: Queste citazioni potrebbero non essere precise al 100%.