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
Stocker, Paul, 1971-
A student grammar of German
Cambridge University Press, 2012
 Buku Teks SO