Koocher, Gerald P.
Oxford University Press, 1998
Buku Teks
Choate, Mark S.
Wiley Publishing, Inc., 2008
Buku Teks
Menezes, Francis A.
Tata McGraw-Hill, 1977
Buku Teks
DeMello, Jim
McGraw-Hill, 2003
Buku Teks
Hassler, Russell H.
Prentice-Hall, 1958
Buku Teks