APA-referens (7:e uppl.)

COREY E R. (1985). PROBLEMS IN MARKETING (6TH.). MCGRAW-HILL.

Chicago-referens (17:e uppl.)

COREY E R. PROBLEMS IN MARKETING. 6TH. NEW YORK: MCGRAW-HILL, 1985.

MLA-referens (9:e uppl.)

COREY E R. PROBLEMS IN MARKETING. 6TH. MCGRAW-HILL, 1985.