by Stephen Barrett, William M. London, Manfred Kroger, Harriet Hall, Robert S. Baratz
McGraw-Hill, 2013
Buku Teks
Holtzman, Samuel, author
Addison-Wesley, 1989
Buku Teks
Turban, Efraim, 1930-, author
Prentice-Hall, 2005
Buku Teks
Publications International, 2000
Buku Referensi
Watson, Barbara Bellow
Norton, 1964
Buku Teks