Uriel Weinreich (1977) “crêpe”, in Modern English-Yiddish, Yiddish-English Dictionary, New York: Schocken Books, page 72
Justus van de Kamp et al., “קרעפּ” in Jiddisch-Nederlands Woordenboek [Yiddish-Dutch Dictionary], Amsterdam: Stichting Jiddische Lexicografie, 1987-present (ongoing). [1].