Dubhashi, P. R. (1970). Principles and philosophy of co-operation. Vaikunth Mehta National Institute of Co-operative Management.
Lua i Stíl Chicago (17ú heag.)Dubhashi, P. R. Principles and Philosophy of Co-operation. [Poona]: Vaikunth Mehta National Institute of Co-operative Management, 1970.
Lua MLA (8ú heag.)Dubhashi, P. R. Principles and Philosophy of Co-operation. Vaikunth Mehta National Institute of Co-operative Management, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.