Bergmann, H., & Boussard, J. (1976). Guide to the economic evaluation of irrigation projects (Rev. ver.). Organisation for Economic Co-operation and Development ; sold by OECD Publications Center].
Lua i Stíl Chicago (17ú heag.)Bergmann, Hellmuth, agus Jean-Marc Boussard. Guide to the Economic Evaluation of Irrigation Projects. Rev. ver. Paris : [Washington, D.C.: Organisation for Economic Co-operation and Development ; sold by OECD Publications Center], 1976.
Lua MLA (8ú heag.)Bergmann, Hellmuth, agus Jean-Marc Boussard. Guide to the Economic Evaluation of Irrigation Projects. Rev. ver. Organisation for Economic Co-operation and Development ; sold by OECD Publications Center], 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.