Jack Canfield. (2012). Success Principles: How to get from where you are to where you want to be. HarperCollins.
Chicago Edition CitationJack Canfield. Success Principles: How to Get from Where You Are to Where You Want to Be. HarperCollins, 2012.
Cita MLAJack Canfield. Success Principles: How to Get from Where You Are to Where You Want to Be. HarperCollins, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.