"Officer dead". The Telegraph. Calcutta, India. 20 May 2012. Archived from the original on 10 March 2014. Retrieved 22 May 2012.
Mukherjee, Prasun (21 May 2012). "Born leader of police force". Calcutta, India: The Telegraph, 21 May 2012. Archived from the original on 10 March 2014. Retrieved 22 May 2012.
web.archive.org
"Officer dead". The Telegraph. Calcutta, India. 20 May 2012. Archived from the original on 10 March 2014. Retrieved 22 May 2012.
Mukherjee, Prasun (21 May 2012). "Born leader of police force". Calcutta, India: The Telegraph, 21 May 2012. Archived from the original on 10 March 2014. Retrieved 22 May 2012.