APA aipamena

Czepiel, J. A. (1992). Competitive Marketing Strategy. Prentice - Hall.

Chicago Style aipamena

Czepiel, John A. Competitive Marketing Strategy. Prentice - Hall, 1992.

MLA aipamena

Czepiel, John A. Competitive Marketing Strategy. Prentice - Hall, 1992.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.