APA
Sen S. E. e. a., . (1996). Unique quintessence of advanced general studies: Civil services main examination to be held in November 1996. New Delhi: Unique Publishers.
Chicago
Sen S Ed et al, . 1996. Unique quintessence of advanced general studies: Civil services main examination to be held in November 1996. New Delhi: Unique Publishers.
Harvard
Sen S. E. e. a., . (1996). Unique quintessence of advanced general studies: Civil services main examination to be held in November 1996. New Delhi: Unique Publishers.
MLA
Sen S Ed et al, . Unique quintessence of advanced general studies: Civil services main examination to be held in November 1996. New Delhi: Unique Publishers. 1996.