Coggle, Paul
German complete course for beginners
Teach Youeself Books, 1991
 Buku Teks SO
Wilkes, Angela
German for beginners
Chicago: A Division of NTC Pub., 1987,
 Buku Referensi
Burke, Claire
Kenntnisse : an advanced German course student's book / Claire Burke
New York Routledge, 1999
 Buku Teks SO
McKeane, Alasdair
German
Longman, 1994
 Buku Teks SO
Coggle, Paul
Complete German, volume 2 = Teach yourself German
Kesaint Blanc, 2011
 Buku Teks SO