Greenberg, Jerald, author
Pearson, Prentice Hall, 2008
Buku Teks
Gibson, James L., author
McGraw-Hill, 2000
Buku Teks
Gibson, James L., author
Irwin, 1994
Buku Teks
by James L. Gibson, John M. Ivancevich, James H. Donnelly, Robert Konopaske
McGraw-Hill, 2009
Buku Teks
Reitz, H. Joseph
richard D. Irwin, 1977
Buku Teks