Digital images of niścit sāphalya: ṭenśan mukta jīban lābher upāẏ, a guide to achieving success. Written by śubhaṅkar, published by P Basak, 17 May 2007.
"The original material is owned and held by Gautam Mitra; access enquiries should be directed to Gautam Mitra via the School of Cultural Texts and Records, Jadavpur University, Kolkata.".