1
2
by Gimfil James, Dr.
Published 1999
3
4
5
Published 1983
6
by Williams, Thomas Rhys.
Published 1965
7
8
by Griswold Jr., John A.
Published 1939
9
10
11
12
Published 2008
13
14
15
16
17
18
Published 2000
19
by Dayu Sansalu
Published 2017
20
by Muhammad bin Harun
Published 2007