The Saṃnyāsa Upaniṣad-s,  with the commentary of Śri Upaniṣad-Brahmayogin. 
Edited by T. R. Chintamani Dikshit. 
 - [Madras]  Adyar Library and Research Centre  [1966] 
 - xviii, 267 p.  22 cm. 
 - The Adyar Library series,  v. 12 .
<br/><br/> In Sanskrit; pref. in English.  "First published, 1929; reprinted, 1966." 
<br/><br/><label>ISBN: </label>0835673669 
<br/><br/><label>LCCN: </label>sa 68005165  
<br/><br/><label>LC Class. No.: </label>PK3521  / .S2 1966