APA
J. K. Chopra, . (201). Unique Quintessence of Economics for Indian Economic Service also for Civil Service and Other Competitive Examinations. New Delhi: Unique Publishers.
Chicago
J. K. Chopra, . 201. Unique Quintessence of Economics for Indian Economic Service also for Civil Service and Other Competitive Examinations. New Delhi: Unique Publishers.
Harvard
J. K. Chopra, . (201). Unique Quintessence of Economics for Indian Economic Service also for Civil Service and Other Competitive Examinations. New Delhi: Unique Publishers.
MLA
J. K. Chopra, . Unique Quintessence of Economics for Indian Economic Service also for Civil Service and Other Competitive Examinations. New Delhi: Unique Publishers. 201.