APA استشهاد

Singh, S., & Jain, S. (2000). 'O' level made simple module - III: Business systems. BPB Publications.

استشهاد بنمط شيكاغو

Singh, Shashi, و Satish Jain. 'O' Level Made Simple Module - III: Business Systems. New Delhi: BPB Publications, 2000.

MLA استشهاد

Singh, Shashi, و Satish Jain. 'O' Level Made Simple Module - III: Business Systems. BPB Publications, 2000.