Albig, WIlliam
McGraw-Hill, 1939
Buku Teks
Doob, Leonard William, 1909-, author
The Cresset Press, 1948
Buku Teks
The Free Press, 1966
Buku Teks
Roll, Charles W.
Seven Locks Press, 1980
Buku Teks
Ginneken, Jaap van
Lawrence Erlbaum associates, 2002
Buku Teks