DAVIES, J. W., & DAVIES, J. W. (1996). Communication For Engieneering Students John W. Davies. Longman.
Lua i Stíl Chicago (17ú heag.)DAVIES, John W., agus John W. DAVIES. Communication For Engieneering Students John W. Davies. Longman, 1996.
Lua MLA (8ú heag.)DAVIES, John W., agus John W. DAVIES. Communication For Engieneering Students John W. Davies. Longman, 1996.
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