توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Frohman, D., & Howard, R. (2008). Leadership the hard way: Why leadership can't be taught and how you can learn it anyway. Jossey-Bass.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Frohman, Dov, و Robert Howard. Leadership the Hard Way: Why Leadership Can't Be Taught and How You Can Learn It Anyway. San Francisco, CA: Jossey-Bass, 2008.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Frohman, Dov, و Robert Howard. Leadership the Hard Way: Why Leadership Can't Be Taught and How You Can Learn It Anyway. Jossey-Bass, 2008.