APA
Promotional Products Association International, . (1995). Point of Purchase. Hong Kong: Point of Purchase Advertising Institute.
Chicago
Promotional Products Association International, . 1995. Point of Purchase. Hong Kong: Point of Purchase Advertising Institute.
Harvard
Promotional Products Association International, . (1995). Point of Purchase. Hong Kong: Point of Purchase Advertising Institute.
MLA
Promotional Products Association International, . Point of Purchase. Hong Kong: Point of Purchase Advertising Institute. 1995.
