Παραπομπή APA

Oster,Sharon M. (1999). Modern competitive analysis (3rd ed.). Oxford University Press.

Παραπομπή Chicago Style

Oster,Sharon M. Modern Competitive Analysis. 3rd ed. New York: Oxford University Press, 1999.

Παραπομπή MLA

Oster,Sharon M. Modern Competitive Analysis. 3rd ed. Oxford University Press, 1999.