Canfield, J., Switzer, J., & Campbell, D. (2015). The success principles: How to get from where you are to where you want to be (10th anniversary edition.). Harper Audio.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Canfield, Jack, Janet Switzer, و Danny Campbell. The Success Principles: How to Get from Where You Are to Where You Want to Be. 10th anniversary edition. [New York]: Harper Audio, 2015.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Canfield, Jack, et al. The Success Principles: How to Get from Where You Are to Where You Want to Be. 10th anniversary edition. Harper Audio, 2015.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.