Cita APA (7th ed.)

MCDONALD WILLIAM J. (1998). DIRECT MARKETING: AN INTEGRATED APPROACH. IRWIN MCGRAW-HILL.

Cita Chicago (17th ed.)

MCDONALD WILLIAM J. DIRECT MARKETING: AN INTEGRATED APPROACH. BOSTON: IRWIN MCGRAW-HILL, 1998.

Cita MLA (9th ed.)

MCDONALD WILLIAM J. DIRECT MARKETING: AN INTEGRATED APPROACH. IRWIN MCGRAW-HILL, 1998.