Porter, Michael E., author
Harvard Business Review Book, 1998
Buku Teks
Porter, Alyene
Abingdon Press, 1950
Buku Teks
Porter, Venetia
London British Museum 1995,
Buku Referensi
Harvard Business School Press, 1991
Buku Teks
Porter, Michael E., author
The Free Press, 1985
Buku Teks