Francis, S. (1983). Premeir IAS General Studies (3rd ed.). Binny.
Chicago Style aipamenaFrancis, SRS. Premeir IAS General Studies. 3rd ed. New Delhi: Binny, 1983.
MLA aipamenaFrancis, SRS. Premeir IAS General Studies. 3rd ed. Binny, 1983.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.