Cunningham, D. Pure Wisdom: The Simple Things That Transform Everyday Life (1.). Pearson Education UK.
Chicago Style (17. basım) AtıfCunningham, Dean. Pure Wisdom: The Simple Things That Transform Everyday Life. 1. Pearson Education UK.
MLA (8th ed.) AtıfCunningham, Dean. Pure Wisdom: The Simple Things That Transform Everyday Life. 1. Pearson Education UK.
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