1
by Smith
Published 2000
2
by Nyman
Published 2006
3
by Anggraeni
Published 2006
4
5
by Assyaukanie
Published 2009
6
by Pribadi
Published 1999
7
by Mann
Published 2000
8
Published 1999
9
by Siregar
10
by Suryadinata, Leo.
Published 2002
11
Published 2002
12
Published 2004
13
Published 1984
14
Published 1984
15
Published 1999
16
by Barton
Published 2005
17
Published 1989