Dhawan, H. (11 July 2009) "45 years on, Shastri's death a mystery – PMO refuses to Entertain RTI Plea Seeking Declassification of Document".
Accesat în 29 iunie 2017.  ^ Dhawan, H. "45 years on, Shastri's death a mystery – PMO refuses to Entertain RTI Plea Seeking Declassification of Document".