Singh, S., & Jain, S. (2000). 'O' level made simple module - III: Business systems. BPB Publications.
シカゴスタイル引用形Singh, Shashi, , Satish Jain. 'O' Level Made Simple Module - III: Business Systems. New Delhi: BPB Publications, 2000.
MLA引用形式Singh, Shashi, , Satish Jain. 'O' Level Made Simple Module - III: Business Systems. BPB Publications, 2000.
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