APA (7th ed.) Citation

Drucker, P. F., & Drucker, P. F. Men, ideas, and politics.

Chicago Style (17th ed.) Citation

Drucker, Peter F., and Peter F. Drucker. Men, Ideas, and Politics.

MLA (8th ed.) Citation

Drucker, Peter F., and Peter F. Drucker. Men, Ideas, and Politics.

Warning: These citations may not always be 100% accurate.