Siu, Ralph Gun Hoy
John Wiley & Sons, 1980
Buku Teks
Smilansky, Jonathan, author
Wiley ; San Francisco, CA : Jossey-Bass, 2007
Buku Teks
Lencioni, Patrick, author
Salemba Empat, 2005
Buku Teks
Drucker, Peter F. (Peter Ferdinand), 1909-2005, author
Times Books International, 1985
Buku Teks
Bellows, Roger, author
Prentice-Hall, 1962
Buku Teks