1
by Small
Published 1993
2
by Kastenbaum
Published 2007
3
by De Vos
Published 1990
4
by Abdullah Hassan
Published 2002
5
by De Bono
Published 1992
6
by Marrone
Published 1997
7
by Williams
Published 1990
8
by Biggs
Published 1993
9
by Small
Published 1993
10
Published 1989
11
by Taylor, 1931-
Published 1992