edited by Walter K. Gordon
Appleton-Century-Crofts, 1968
Buku Teks SO
Claycomb, James
Jones and Bartlett Publishers, 2011
Buku Teks
edited by Hwa Yol Jung
Lexington Books, 2002
Buku Teks SO
Lippincott, 1999
Buku Teks SO
Weinberger, Paul E.
Macmillan, 1974
Buku Teks