Goldstein, C., & Ritter, J. (2000). The varieties of unity: Sounding unified theories 1920 - 1930. Max-Planck-Inst. für Wissenschaftsgeschichte.
Čikaški stil citiranja (17. izdanje)Goldstein, Catherine, i Jim Ritter. The Varieties of Unity: Sounding Unified Theories 1920 - 1930. Berlin: Max-Planck-Inst. für Wissenschaftsgeschichte, 2000.
MLA način citiranja (8. izdanje)Goldstein, Catherine, i Jim Ritter. The Varieties of Unity: Sounding Unified Theories 1920 - 1930. Max-Planck-Inst. für Wissenschaftsgeschichte, 2000.
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