Ruppin, A. The Jewish population of the world. Group dynamics : research and theory.
Cita Chicago (17th ed.)Ruppin, Arthur. "The Jewish Population of the World." Group Dynamics : Research and Theory .
Cita MLA (8th ed.)Ruppin, Arthur. "The Jewish Population of the World." Group Dynamics : Research and Theory, .
Atenció: Aquestes cites poden no estar 100% correctes.