APA (7th ed.) Citation

Drucker Peter Ferdinand. (1985). Management: Tasks, responsibilities, practices (1st Harper colophon ed.). Harper & Row.

Chicago Style (17th ed.) Citation

Drucker Peter Ferdinand. Management: Tasks, Responsibilities, Practices. 1st Harper colophon ed. New York: Harper & Row, 1985.

MLA (8th ed.) Citation

Drucker Peter Ferdinand. Management: Tasks, Responsibilities, Practices. 1st Harper colophon ed. Harper & Row, 1985.