APA
(1980). Competitive strategy : Techniques for analyzing industries and competitors. New York: New York, The Dryden Press.
Chicago
1980. Competitive strategy : Techniques for analyzing industries and competitors. New York: New York, The Dryden Press.
Harvard
(1980). Competitive strategy : Techniques for analyzing industries and competitors. New York: New York, The Dryden Press.
MLA
Competitive strategy : Techniques for analyzing industries and competitors. New York: New York, The Dryden Press. 1980.
