Lepper, J. H., & Breul, K. (1958). The new enlarged Cassellï؟1/2s Germanï؟1/2English, Englishï؟1/2German compact dictionary: With a phonetic key to the pronunciation of German words and appendices containing lists of German and English irregular verbs and geographical and proper names (15th ed.). Cassell.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Lepper, John Heron, و Karl Breul. The New Enlarged Cassellï؟1/2s Germanï؟1/2English, Englishï؟1/2German Compact Dictionary: With a Phonetic Key to the Pronunciation of German Words and Appendices Containing Lists of German and English Irregular Verbs and Geographical and Proper Names. 15th ed. London: Cassell, 1958.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Lepper, John Heron, و Karl Breul. The New Enlarged Cassellï؟1/2s Germanï؟1/2English, Englishï؟1/2German Compact Dictionary: With a Phonetic Key to the Pronunciation of German Words and Appendices Containing Lists of German and English Irregular Verbs and Geographical and Proper Names. 15th ed. Cassell, 1958.