Miell, Anna
Intermediate German : a grammar and workbook
Routledge, 2006
 Buku Teks SO
Donaldson, Bruce
German: an essential grammar
Routledge, 2006
 Buku Teks SO
Modern German Grammar workbook
by Bill Dodd ... [and others]
Routledge, 1996
 Buku Teks SO
Prowe, Gunhild
German dictionary and grammar
Oxford University Press, 1995
 Buku Referensi
Dreyer, Hilke
A practice grammar of German
Verlag fur Deutsch , 1994
 Buku Teks SO