Herring, J. How to Decide: What to do when you don't know what to do (1.). Pearson Education UK.
Chicago-viite (17. p.)Herring, Jonathan. How to Decide: What to Do When You Don't Know What to Do. 1. Pearson Education UK.
MLA-viite (8. p.)Herring, Jonathan. How to Decide: What to Do When You Don't Know What to Do. 1. Pearson Education UK.
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