Canfield, J. (2005). Success principle: How to get from where you are to where you want to be. Harper Collins.
Styl ChicagoCanfield, Jack. Success Principle: How to Get from Where You Are to Where You Want to Be. New Delhi: Harper Collins, 2005.
Citace podle MLACanfield, Jack. Success Principle: How to Get from Where You Are to Where You Want to Be. Harper Collins, 2005.
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