Παραπομπή APA

Drucker, P. F. (1990). Managing the non-profit organization: Practices and principles. Routledge.

Παραπομπή Chicago Style

Drucker, Peter F. Managing the Non-profit Organization: Practices and Principles. London: Routledge, 1990.

Παραπομπή MLA

Drucker, Peter F. Managing the Non-profit Organization: Practices and Principles. Routledge, 1990.