Jain & Gupta. Upkar's National Defence Academy and naval academy examination. Upkar Prakashan.
Chicago Style aipamenaJain and Gupta. Upkar's National Defence Academy and Naval Academy Examination. Agra: Upkar Prakashan.
MLA aipamenaJain and Gupta. Upkar's National Defence Academy and Naval Academy Examination. Upkar Prakashan.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.