BOYD HARPER W. (1990). MARKETING RESEARCH TEXT AND CASES (7.). RICHARD D.IRWIN INC.
芝加哥风格引文BOYD HARPER W. MARKETING RESEARCH TEXT AND CASES. 7. DELHI: RICHARD D.IRWIN INC, 1990.
MLA引文BOYD HARPER W. MARKETING RESEARCH TEXT AND CASES. 7. RICHARD D.IRWIN INC, 1990.
警告：这些引文格式不一定是100％准确.