Ritchie, Steve. “Charting the Deep: A History of the Indian Naval Hydrographic Department Dr Manoshi Bhattacharya, Published by the National Hydrographic Office of India. 2004”. The International Hydrographic Review, vol. 5, no. 3, Dec. 2004, https://journals.lib.unb.ca/index.php/ihr/article/view/20681.