1
by Parfitt
Published 1987
2
by Anderson
Published 2008
3
4
5
by Timberlake
Published 1988
6
by Shivji, 1946-
Published 1989
7
8
9
Published 1989
10
by Azumah
Published 2001
11
12
13
by Hiskett
Published 1994
14
by Boahen
Published 1987
15
Published 2004
16
by Hogg
Published 1979
17
Published 1991
18
by Kennedy
Published 1988
19
Published 1991
20
Published 1992