1
Published 1982
2
Published 2012
3
Published 2012
4
Published 2011
5
by Panggabean, Huraidi
Published 2012
6
Published 2013
7
Published 2000
8
Published 2004
9
10
11
Published 2017
12
Published 2011
13
Published 1998
14
15
Published 2016
16
Published 2004
17
18
Published 2016
19
Published 2012
20
Published 2015