Tyagi, R. (1968). Recent trends in the co-operative movement in India. Asia Pub. House.
Lua i Stíl Chicago (17ú heag.)Tyagi, R. Recent Trends in the Co-operative Movement in India. Bombay: Asia Pub. House, 1968.
Lua MLA (9ú heag.)Tyagi, R. Recent Trends in the Co-operative Movement in India. Asia Pub. House, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.