APA (7 ম সংস্করণ) উদ্ধৃতি

PORTER, M. E. (1980). Competitive Strategy Techniques For Analyzing Industies And Competitors Michael E. Porter. the Free Press.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

PORTER, Michael E. Competitive Strategy Techniques For Analyzing Industies And Competitors Michael E. Porter. the Free Press, 1980.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

PORTER, Michael E. Competitive Strategy Techniques For Analyzing Industies And Competitors Michael E. Porter. the Free Press, 1980.