APA aipamena

Oster, S. M., & Sharon M. Oster. (1999). Modern competitive analysis. New York: Oxford University Press.

Chicago Style aipamena

Oster, Sharon M., và Sharon M. Oster. Modern Competitive Analysis. New York: Oxford University Press, 1999.

MLA aipamena

Oster, Sharon M., và Sharon M. Oster. Modern Competitive Analysis. New York: Oxford University Press, 1999.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.