Caustin, H. (1974). The search for new methods of technical co-operation. UNITAR.
Lua i Stíl Chicago (17ú heag.)Caustin, Harold. The Search for New Methods of Technical Co-operation. New York: UNITAR, 1974.
Lua MLA (9ú heag.)Caustin, Harold. The Search for New Methods of Technical Co-operation. UNITAR, 1974.
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