APA (7e ed.) Bronvermelding

BRUEN PATRICIA E. (1992). MARKETING. MCGRAW-HILL.

Chicago (17e ed.) Bronvermelding

BRUEN PATRICIA E. MARKETING. NEW YORK: MCGRAW-HILL, 1992.

MLA (9e ed.) Bronvermelding

BRUEN PATRICIA E. MARKETING. MCGRAW-HILL, 1992.