Modern German Grammar workbook
by Bill Dodd ... [and others]
Routledge, 1996
 Buku Teks SO
Goodman-Stephens, Bryan
Zickzack : arbeitbogen 1 & 2
Arnold-Wheaton, 1987
 Buku Teks SO
Azar, Betty Schrampfer, 1941-
Basic english grammar
Prentice Hall Regents, 1995
 Buku Teks SO
Azar, Betty Schrampfer, 1941-
Understanding and using english grammar
Binarupa Aksara, 1993
 Buku Teks SO
Byon, Andrew Sangpil
Basic korean : a grammar and workbook
Routledge, Taylor & Francis Group, 2009
 Buku Teks SO