Miller, Richard L.
McGraw-Hill, 1995
Buku Referensi
Miller, Richard L.
W.W. Norton , 2002
Buku Teks
Packer, Herbert L.
McGraw-Hill, 1973
Buku Teks
Redstone, Louis G.
New York: McGraw-Hill, 1981
Buku Teks
edited by Julian Hilton
Macmillan, 1993
Buku Teks