Cambridge University Press, 2004
Buku Teks
Harvard Business School Press, 2001
Buku Teks
edited by Hermann Brandstatter
Academic Press, 1982
Buku Teks
Melman, Seymour, author
Oxford, Basil Blacwell & Mott
Buku Teks
Zeleny, Milan, 1942-, author
McGraw-Hill, 1982
Buku Teks