APA (7th ed.) Citation

Drucker, P. F. (2003). Managing oneselfPeter F. Drucker ed.A. Usmara. Amara.

Chicago Style (17th ed.) Citation

Drucker, Peter F. Managing OneselfPeter F. Drucker Ed.A. Usmara. Amara, 2003.

MLA (8th ed.) Citation

Drucker, Peter F. Managing OneselfPeter F. Drucker Ed.A. Usmara. Amara, 2003.

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