Cita APA (7a ed.)

BLY ROBERT W. (1992). BUSINESS TO BUSINESS DIRECT MARKETING. NTC BUSINESS BOOKS.

Cita Chicago Style (17a ed.)

BLY ROBERT W. BUSINESS TO BUSINESS DIRECT MARKETING. LINCOLNWOOD: NTC BUSINESS BOOKS, 1992.

Cita MLA (9a ed.)

BLY ROBERT W. BUSINESS TO BUSINESS DIRECT MARKETING. NTC BUSINESS BOOKS, 1992.