Miner, John B., author
McGraw-Hill, 1992
Buku Teks
Tiffin, Joseph, author
Prentice-Hall, 1958
Buku Teks
DuBrin, Andrew J., author
Prentice-Hall, 2000
Buku Teks
edited by P.J.D. Drenth ... [and others]
Wiley, 1984
Buku Teks
Siegel, Laurence, author
Richard D. Irwin, 1968
Buku Teks