APA (7th ed.) Citation

Drucker, P. F. (1973). Management: Task responsibilities practices. Harper Collins Publishers.

Chicago Style (17th ed.) Citation

Drucker, Peter F. Management: Task Responsibilities Practices. New York: Harper Collins Publishers, 1973.

MLA (8th ed.) Citation

Drucker, Peter F. Management: Task Responsibilities Practices. Harper Collins Publishers, 1973.