Wichman, K.
McKay's modern German-English and English-German dictionary with rules as pronunciation
New York, David Mckay Company
 Buku Referensi
Wessely, J.E.
Junior Classic German dictionary German-English and English-German
Chicago dsb. Pollett Publ. 1946
 Buku Referensi
Wichman, Karl
Handy dictionary of the German and English languages with rules as to pronuciation
Philadelphia, David McKay Company, 1944
 Buku Referensi
Breul, Karl
Heath's new German and English dictionary. With a phonetic key to pronunciation
Boston D.C. Heath 1936
 Buku Referensi
Concise Oxford duden German dictionary English-German, German-English
Oxford , Clarendon Press
 Buku Referensi