Yale, William
The University of Michigan Press, 1958
Buku Teks SO
Goldschmidt, Arthur
Westview Press, 1983
Buku Teks
Ochsenwald, William
McGraw-Hill, 2011
Buku Teks SO
Lockman, Zachary
Cambridge, 2004
Buku Teks SO
edited by Reeva S. Simon, Philip Mattar and Richard W. Bulliet
Macmillan, 1996
Buku Referensi