Citazione Stile APA (7a Edizione)
Canfield, J., & Switzer, J. (2005). The success principles: How to get from where you are to where you want to be. HarperCollins.
Citazione stile Chigago Style (17a edizione)
Canfield, Jack, e Janet Switzer. The Success Principles: How to Get from Where You Are to Where You Want to Be. New York: HarperCollins, 2005.
Citatione MLA (9a ed.)
Canfield, Jack, e Janet Switzer. The Success Principles: How to Get from Where You Are to Where You Want to Be. HarperCollins, 2005.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.