APA (7e ed.) Bronvermelding

NASH EDWARD L EDT. (1984). DIRECT MARKETING HANDBOOK. MCGRAW-HILL.

Chicago (17e ed.) Bronvermelding

NASH EDWARD L EDT. DIRECT MARKETING HANDBOOK. NEW YORK: MCGRAW-HILL, 1984.

MLA (9e ed.) Bronvermelding

NASH EDWARD L EDT. DIRECT MARKETING HANDBOOK. MCGRAW-HILL, 1984.