FRIGSTAD DAVID B. (1994). KNOW YOUR MARKETING HOW TO DO LOW-COST MARKET RESEARCH. OASIS PRESS.
芝加哥风格引文FRIGSTAD DAVID B. KNOW YOUR MARKETING HOW TO DO LOW-COST MARKET RESEARCH. OREGON: OASIS PRESS, 1994.
MLA引文FRIGSTAD DAVID B. KNOW YOUR MARKETING HOW TO DO LOW-COST MARKET RESEARCH. OASIS PRESS, 1994.
警告：这些引文格式不一定是100％准确.