BLY ROBERT W. (1992). BUSINESS TO BUSINESS DIRECT MARKETING. NTC BUSINESS BOOKS.
芝加哥风格引文BLY ROBERT W. BUSINESS TO BUSINESS DIRECT MARKETING. LINCOLNWOOD: NTC BUSINESS BOOKS, 1992.
MLA引文BLY ROBERT W. BUSINESS TO BUSINESS DIRECT MARKETING. NTC BUSINESS BOOKS, 1992.
警告：这些引文格式不一定是100％准确.