edited by Edwin A. Fleishman
Dorsey Press, 1967
Buku Teks
Cascio, Wayne F., author
Reston Pub. Co, 1982
Buku Teks
McCormick, Ernest James, author
Prentice-Hall, 1984
Buku Teks
Ghiselli, Edwin E., author
McGraw-Hill, 1955
Buku Teks
Spector, Paul E., author
Jones & Bartllett, 2012
Buku Teks