Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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