APA (7e ed.) Bronvermelding

NASH EDWARD L. (1988). DIRECT MARKETING: STRATEGY,PLANNING ,EXECUTION (2.). MCGRAW-HILL.

Chicago (17e ed.) Bronvermelding

NASH EDWARD L. DIRECT MARKETING: STRATEGY,PLANNING ,EXECUTION. 2. NEW YORK: MCGRAW-HILL, 1988.

MLA (9e ed.) Bronvermelding

NASH EDWARD L. DIRECT MARKETING: STRATEGY,PLANNING ,EXECUTION. 2. MCGRAW-HILL, 1988.