Παραπομπή APA

Sen,S. (2000). Unique quintessence of general studies: For UPSC civil services priliminary examination, 2000 (21st rev. ed.). Unique Publishers.

Παραπομπή Chicago Style

Sen,S. Unique Quintessence of General Studies: For UPSC Civil Services Priliminary Examination, 2000. 21st rev. ed. New Delhi: Unique Publishers, 2000.

Παραπομπή MLA

Sen,S. Unique Quintessence of General Studies: For UPSC Civil Services Priliminary Examination, 2000. 21st rev. ed. Unique Publishers, 2000.