Jack Canfield. (2012). Success Principles: How to get from where you are to where you want to be. HarperCollins.
Styl ChicagoJack Canfield. Success Principles: How to Get from Where You Are to Where You Want to Be. HarperCollins, 2012.
Citace podle MLAJack Canfield. Success Principles: How to Get from Where You Are to Where You Want to Be. HarperCollins, 2012.
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