Sperling, J. B. (1969). The human dimension of technical assistance: The German experience at Rourkela, India. Cornell University Press.
Lua i Stíl Chicago (17ú heag.)Sperling, Jan Bodo. The Human Dimension of Technical Assistance: The German Experience at Rourkela, India. Ithaca [N.Y.]: Cornell University Press, 1969.
Lua MLA (9ú heag.)Sperling, Jan Bodo. The Human Dimension of Technical Assistance: The German Experience at Rourkela, India. Cornell University Press, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.