(2010). R. GUPTA'S popular master guide intelligence bureau: Assistant central intelligence officers grade-II/executive. Ramesh Publishing House.
Chicago Edition CitationR. GUPTA'S Popular Master Guide Intelligence Bureau: Assistant Central Intelligence Officers Grade-II/executive. New Delhi: Ramesh Publishing House, 2010.
Deismireacht MLAR. GUPTA'S Popular Master Guide Intelligence Bureau: Assistant Central Intelligence Officers Grade-II/executive. Ramesh Publishing House, 2010.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.