APA (7th ed.) Citation

Drucker, P. F., Hesselbein, F., & Economy, P. (2015). Peter Drucker's five most important questions: Enduring wisdom for young leaders. Wiley.

Chicago Style (17th ed.) Citation

Drucker, Peter F., Frances Hesselbein, and Peter Economy. Peter Drucker's Five Most Important Questions: Enduring Wisdom for Young Leaders. Hoboken, New Jersey: Wiley, 2015.

MLA (9th ed.) Citation

Drucker, Peter F., et al. Peter Drucker's Five Most Important Questions: Enduring Wisdom for Young Leaders. Wiley, 2015.