APA Style
Porter , Michael E. (1999).
Competitive Advantage : Creating and Sustaining Superior Performance .
:
.
Chicago Style
Porter , Michael E.
Competitive Advantage : Creating and Sustaining Superior Performance.
:
,
1999.
.
MLA Style
Porter , Michael E.
Competitive Advantage : Creating and Sustaining Superior Performance.
:
,
1999.
.
Turabian Style
Porter , Michael E.
Competitive Advantage : Creating and Sustaining Superior Performance.
:
,
1999.
.