Griffin, Ricky W., author
Cengage Learning, 2014
Buku Teks
Greenberg, Jerald, author
Prentice-Hall, 2003
Buku Teks
Colquitt, Jason A., author
McGraw-Hill Irwin, 2009
Buku Teks
Heilman, Madeline E., author
Richard D. Irwin, 1982
Buku Teks
Greenberg, Jerald, author
Pearson, Prentice Hall, 2008
Buku Teks