Porter, Michael E.
Competitive advantage : creating and sustaining superior performance
The Free Press , 1985
 Buku Teks
Gray, Edmund R.
Management : the competitive edge
Macmillan, 1990
 Buku Teks
Porter, Michael E.
Competitive strategy : techniques for analysis industries and competitor
Free Press a Division of Macmillan, 2004
 Buku Teks
Porter, Michael E.
The competitive advantage of nations
The Free Press , 1990
 Buku Teks
Porter, Michael E.
Competitive advantage / Michael E. Porter
Free Press, 1985
 Buku Teks