Bedeian, Arthur G.
Dryden Press, 1991
Buku Teks
Harrison, Michael I.
Sage publications, 1987
Buku Teks
Gibson, James L., author
McGraw-Hill, 2000
Buku Teks
Greenberg, Jerald, author
Pearson, Prentice Hall, 2008
Buku Teks
Gibson, James L., author
Binarupa Aksara, 1997
Buku Teks