O'Connell, F. Simply Brilliant: The common-sense guide to success at work (4.). Pearson Education UK.
Chicago-viite (17. p.)O'Connell, Fergus. Simply Brilliant: The Common-sense Guide to Success at Work. 4. Pearson Education UK.
MLA-viite (8. p.)O'Connell, Fergus. Simply Brilliant: The Common-sense Guide to Success at Work. 4. Pearson Education UK.
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