Pfeiffer, John E., author
McGraw-Hill , 1977
Buku Teks
Feder, Kenneth L.
Mayfield Publishing Company, 1997
Buku Teks
Keith, Arthur Berriedale, 1879-1944, author
Watts & Co., 1947
Buku Teks
Keith, Arthur, Sir, author
Watts & Co., 1950
Buku Teks
Leakey, Richard
Tian xia wen hua chu ban gu fen you xian gong si, 1995
Buku Teks