APA (7th ed.) Citation

Drucker, P. F. (1990). Managing the non-profit organization. Harpercollins Publishers.

Chicago Style (17th ed.) Citation

Drucker, Peter F. Managing the Non-profit Organization. New York: Harpercollins Publishers, 1990.

MLA (9th ed.) Citation

Drucker, Peter F. Managing the Non-profit Organization. Harpercollins Publishers, 1990.