Kacis, L. Osip Mandel'štam i evrejskaja Varšava 1914 goda: Iz kommentariev k stihotvoreniju 'Ot vtornika i do subboty' / Leonid Kacis. Studies in Modern Russian and Polish culture and Bibliography : essays in honor of Wojciech Zalewski.(1999).
Lua i Stíl Chicago (17ú heag.)Kacis, Leonid. "Osip Mandel'štam I Evrejskaja Varšava 1914 Goda: Iz Kommentariev K Stihotvoreniju 'Ot Vtornika I Do Subboty' / Leonid Kacis." Studies in Modern Russian and Polish Culture and Bibliography : Essays in Honor of Wojciech Zalewski.(1999) .
Lua MLA (8ú heag.)Kacis, Leonid. "Osip Mandel'štam I Evrejskaja Varšava 1914 Goda: Iz Kommentariev K Stihotvoreniju 'Ot Vtornika I Do Subboty' / Leonid Kacis." Studies in Modern Russian and Polish Culture and Bibliography : Essays in Honor of Wojciech Zalewski.(1999), .