Bagehol, R. (1993). Sales Promotion: A Legal Guide. Sweet & Maxwell.
Chicago Style aipamenaBagehol, Richard. Sales Promotion: A Legal Guide. London: Sweet & Maxwell, 1993.
MLA aipamenaBagehol, Richard. Sales Promotion: A Legal Guide. Sweet & Maxwell, 1993.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.