Davies, J. Communication Skills: A Guide for Engineering and Applied Science Students (3.). Pearson Education UK.
Lua i Stíl Chicago (17ú heag.)Davies, John. Communication Skills: A Guide for Engineering and Applied Science Students. 3. Pearson Education UK.
Lua MLA (8ú heag.)Davies, John. Communication Skills: A Guide for Engineering and Applied Science Students. 3. Pearson Education UK.
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