APA (7e ed.) Bronvermelding

ARMSTRONG GARY. (1991). MARKETING MANAGEMENT: ANALYSIS; PLANNING; IMPLEMENTATION & CONTROL (7TH.). PRENTICE -HALL INTERNATIONAL; INC.

Chicago (17e ed.) Bronvermelding

ARMSTRONG GARY. MARKETING MANAGEMENT: ANALYSIS; PLANNING; IMPLEMENTATION & CONTROL. 7TH. NEW JERSEY; U.S.A: PRENTICE -HALL INTERNATIONAL; INC, 1991.

MLA (9e ed.) Bronvermelding

ARMSTRONG GARY. MARKETING MANAGEMENT: ANALYSIS; PLANNING; IMPLEMENTATION & CONTROL. 7TH. PRENTICE -HALL INTERNATIONAL; INC, 1991.