Eberhard, Wolfram
A History of China / Wolfram Eberhard,
Routledge & Kegan Paul, 1952
 Buku Teks
Eberhard, Wolfram
Chinas Geschichte /Wolfram Eberhard
Franche Ag, 1948
 Buku Teks
White, Lynn
Medieval technology and social change
Oxford University Press, 1962
 Buku Teks
Social forces in the middle east
edited by Sydney Nettleton Fisher
Cornell University Press , 1955
 Buku Teks
Du Bois, Cora Alice, 1903-1991
Social forces in Southeast Asia
University of Minesota Press, 1949
 Buku Teks