Dipboye, Robert L., author
Harcourt Brace College, 1994
Buku Teks
Downey, H. Kirk
West Publishing, 1977
Buku Teks
Miner, John B., author
McGraw-Hill, 1992
Buku Teks
Staw, Barry M., author
Macmillan, 1991
Buku Teks
Bass, Bernard M., author
Allyn and Bacon, 1973
Buku Teks