Vinacke, Harold M., author
George Allen and Unwin, 1950
Buku Teks
Vinacke, Harold M., author
Appleton Century Croffs, 1959
Buku Teks
Happold, F.C.
Christophers, 1938
Buku Klasik
Campbell, David, author
University of Queensland Press, 1975
Buku Teks
Edited by Kader Asmal, Davud Chidester, Wilmot James
Abacus, 2013
Buku Teks