APA aipamena

RIES AL. (1989). BOTTOM - UP MARKETING. MCGRAW-HILL.

Chicago Style aipamena

RIES AL. BOTTOM - UP MARKETING. NEW YORK: MCGRAW-HILL, 1989.

MLA aipamena

RIES AL. BOTTOM - UP MARKETING. MCGRAW-HILL, 1989.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.