APA (7th ed.) Citation

Drucker, P. F. (1985). THE EFFECTIVE EXECUTIVE. Perenial Library.

Chicago Style (17th ed.) Citation

Drucker, Peter F. THE EFFECTIVE EXECUTIVE. Perenial Library, 1985.

MLA (8th ed.) Citation

Drucker, Peter F. THE EFFECTIVE EXECUTIVE. Perenial Library, 1985.

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