Zimmerman, J. D. (2015). Feliks Perl on the Jewish Question. Polin.
Lua i Stíl Chicago (17ú heag.)Zimmerman, Joshua D. "Feliks Perl on the Jewish Question." Polin 2015.
Lua MLA (8ú heag.)Zimmerman, Joshua D. "Feliks Perl on the Jewish Question." Polin, 2015.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.