Rosenfeld, Moshe N. (1988). 〈Chapter 9. Early Yiddish in Non-Jewish Books〉. Katz, Dovid. 《Dialects of the Yiddish Language: Winter Studies in Yiddish, Volume 2. Papers from the Second Annual Oxford Winter Symposium in Yiddish Language and Literature, 14-16 December 1986》. Pergamon Press. 99–100쪽. ISBN9780080365640. OCLC17727332. 2022년 11월 5일에 확인함 – 구글 도서 경유.
Rosenfeld, Moshe N. (1988). 〈Chapter 9. Early Yiddish in Non-Jewish Books〉. Katz, Dovid. 《Dialects of the Yiddish Language: Winter Studies in Yiddish, Volume 2. Papers from the Second Annual Oxford Winter Symposium in Yiddish Language and Literature, 14-16 December 1986》. Pergamon Press. 99–100쪽. ISBN9780080365640. OCLC17727332. 2022년 11월 5일에 확인함 – 구글 도서 경유.