Wilkes, Angela
German for beginners / Angela Wilkes; illustrated by John Shackell; designed by Roger Priddy
Passport Books, [date of publication not identified]
 Buku Teks
Bladon, Rachel
French for beginners workbook : meeting people and traveling
Passport Books, [Date of publication not identified]
 Buku Teks
Wilkes, Angela
German for beginners
Chicago: A Division of NTC Pub., 1987,
 Buku Referensi
Coggle, Paul
German complete course for beginners
Teach Youeself Books, 1991
 Buku Teks
Milne, John
The long tunnel / John Milne; illustrated by Gay Galsworthy
Dian Rakyat, [date of publication not identified]
 Buku Teks