UGC. (1993). Guidelines for SAP,COSIST and USIC. University grants commission.
Chicago Style aipamenaUGC. Guidelines for SAP,COSIST and USIC. New delhi: University grants commission, 1993.
MLA aipamenaUGC. Guidelines for SAP,COSIST and USIC. University grants commission, 1993.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.