1
by Holoien, Martin O.
Published 1983
2
by Flood, Robert L.
Published 1991
3
by Abdullah Hassan
Published 2002
4
by De Bono, Edward
Published 2003
5
by Thwaites, Alan
Published 2011
6
by Aragona, Biagio
Published 2022
7
by Eitington, Julius E.
Published 1989