Kelkar, S. A. (2009). Information systems: A concise study (Eastern economy ed.). PHI Learning.
芝加哥风格引文Kelkar, S. A. Information Systems: A Concise Study. Eastern economy ed. New Delhi: PHI Learning, 2009.
MLA引文Kelkar, S. A. Information Systems: A Concise Study. Eastern economy ed. PHI Learning, 2009.
警告：这些引文格式不一定是100％准确.