1
by Boynton, John K.
Published 1977
2
by Lawrance, David M.
Published 1972
3
by Stewart-Brown, R. D.
Published 1962
4
by Khublall, N.
Published 1991
5
6
by Lincoln, John C.
Published 1998
7
Published 1975
8
by Denyer, Green, Barry
Published 1980
9
by Hamilton, R.N.D.
Published 1988
10
by Kitay, Micheal G.
Published 1985
11
by Salleh Buang
Published 1993
12
by Rau, K. V. Padmanabha
Published 1999
13
14
Published 2018