Strong, L. A. G.
Alfred A Knopf, 1933
Buku Teks
Stow, Randolph, 1935-2010, author
Penguin Books, 1986
Buku Teks
Gould, Alan, author
Angus and Roberson Publishers, 1981
Buku Teks
Edey, Maitland A. (Amstrong), 1910-
Time Life Books, 1974
Buku Teks
Booth, Ken, author
George Allen and Unwin, 1985
Buku Teks