DRUCKER PETER F. (1992). MANAGING THE NON-PROFIT ORGANISATION. HARPER COLLINS PUBLISHERS.
Chicago Style aipamenaDRUCKER PETER F. MANAGING THE NON-PROFIT ORGANISATION. NEW YORK: HARPER COLLINS PUBLISHERS, 1992.
MLA aipamenaDRUCKER PETER F. MANAGING THE NON-PROFIT ORGANISATION. HARPER COLLINS PUBLISHERS, 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.