Torgersen, Paul E., author
Prentice-Hall, 1972
Buku Teks
edited by Bart Van Looy, Roland Van Dierdonck and Paul Gemmel
Financial Times Management, 1998
Buku Teks
edited by Bart van Looy and Roland van Dierdonck
Pitman, 1998
Buku Teks
Saunders, Anthony, author
McGraw-Hill, 2008
Buku Teks
Sargent, Howard, author
John Wiley & Sons, 1978
Buku Teks