APA aipamena

Ries, A. (1989). Bottom-up Marketing Al Ries, Jack Trout. McGraw-Hill.

Chicago Style aipamena

Ries, Al. Bottom-up Marketing Al Ries, Jack Trout. McGraw-Hill, 1989.

MLA aipamena

Ries, Al. Bottom-up Marketing Al Ries, Jack Trout. McGraw-Hill, 1989.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.