Yip, George S.
Total global strategy. Managing for worldwide competitive advantage
Prentice-Hall, 1995
 Buku Teks
Yip, George S.
Total global strategy : managing for worldwide competitive advantage
Prentice-Hall, 1995
 Buku Teks
Cook, Thomas A.
Global sourcing logistics: how to manage risk and gain competitive advantage in a worldwide marketplace
American Management Association, 2007
 eBooks
Brown, Stanley A.
Total Quality Service: how organization use it to create a competitive advantage
Prentice-Hall, 1992
 Buku Teks SO
Porter, Michael E.
Competitive advantage
Free Press, 1985
 Buku Teks SO