Robertson, R. (2001). Karl Beck: From Radicalism to Monarchism. Year Book / Leo Baeck Institute.
Čikaški stil citiranja (17. izdanje)Robertson, Ritchie. "Karl Beck: From Radicalism to Monarchism." Year Book / Leo Baeck Institute 2001.
MLA način citiranja (8. izdanje)Robertson, Ritchie. "Karl Beck: From Radicalism to Monarchism." Year Book / Leo Baeck Institute, 2001.
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