APA (7e ed.) Bronvermelding

ARMSTRONG GARY. (1993). MARKETING: AN INTRODUCTION ANNOTATED (3RD.). PRENTICE -HALL INTERNATIONAL; INC.

Chicago (17e ed.) Bronvermelding

ARMSTRONG GARY. MARKETING: AN INTRODUCTION ANNOTATED. 3RD. NEW JERSEY; U.S.A: PRENTICE -HALL INTERNATIONAL; INC, 1993.

MLA (9e ed.) Bronvermelding

ARMSTRONG GARY. MARKETING: AN INTRODUCTION ANNOTATED. 3RD. PRENTICE -HALL INTERNATIONAL; INC, 1993.