Cerami, Charles A., author
Prentice-Hall, 1955
Buku Teks
Goleman, Daniel, author
Harvard Business School Press, 2001
Buku Teks
Harvard Business School, 2003
Buku Teks
Selznick, Philip, author
Harper & Row, 1957
Buku Teks
Gordon, Robert Aaron, author
The Brookings Institution, 1945
Buku Teks