Drg-drśya viveka : an inquiry into the nature of the 'seer' and the 'seen' /
Śaṅkarācārya.
Nikhilananda,Swami.
Mysore : Sri Ramakrishna Asrama,
1976.
Also attributed to Bhāratītīrtha and Mādhava.
English and Sanskrit.
Vedanta.