Roche, Edward M., author
Macmillan, 1992
Buku Teks
by E. Wainright Martin ... [and others]
Prentice-Hall, 1999
Buku Teks
O`Brien, James A., 1936-, author
McGraw-Hill/Irwin, 2004
Buku Teks
Luftman, Jerry N., author
Pearson Education, 2004
Buku Teks
A Harvard Business Review Book, 1991
Buku Teks