Chaturvedi, M. (2000). Direct marketing: Concepts and cases. Excel.
芝加哥风格引文Chaturvedi, Mukesh. Direct Marketing: Concepts and Cases. New Delhi: Excel, 2000.
MLA引文Chaturvedi, Mukesh. Direct Marketing: Concepts and Cases. Excel, 2000.
警告：这些引文格式不一定是100％准确.