Frakes, J. C. (1997). The earliest extant Yiddish purimshpil is traced to Leipzig. Yale Companion to Jewish Writing and Thought in German Culture, 1096-1996.

Frakes, Jerold C. "The Earliest Extant Yiddish Purimshpil Is Traced to Leipzig." Yale Companion to Jewish Writing and Thought in German Culture, 1096-1996 1997.

Frakes, Jerold C. "The Earliest Extant Yiddish Purimshpil Is Traced to Leipzig." Yale Companion to Jewish Writing and Thought in German Culture, 1096-1996, 1997.