Sen, K. C. (1934). Spiritual progress: Sayings and writings of Keshub Chunder Sen. Navavidhan Publication Committee.
Lua i Stíl Chicago (17ú heag.)Sen, Keshub Chunder. Spiritual Progress: Sayings and Writings of Keshub Chunder Sen. Calcutta: Navavidhan Publication Committee, 1934.
Lua MLA (8ú heag.)Sen, Keshub Chunder. Spiritual Progress: Sayings and Writings of Keshub Chunder Sen. Navavidhan Publication Committee, 1934.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.