1
by Siwach, J. R.
Published 1990
2
3
by Langie, G.S.S.J. Ratu
Published 1982
4
by Viotti, Paul R
Published 2010
5
6
by Wang, Gungwu, 1930-
Published 1992
7
by Harun Abdul Majid
Published 2007
8
Published 1989