APA (7th ed.) Citation

Drucker, P. F. (1985). Innovation and entrepreneurship: Practice and principles. National Book Store.

Chicago Style (17th ed.) Citation

Drucker, Peter Ferdinand. Innovation and Entrepreneurship: Practice and Principles. Manila: National Book Store, 1985.

MLA (9th ed.) Citation

Drucker, Peter Ferdinand. Innovation and Entrepreneurship: Practice and Principles. National Book Store, 1985.

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