Drucker, P. F. Preparing Tomorrow Business Leader Today Peter F. Drucker. Prentice-Hall.
Chicago Style (17th ed.) CitationDrucker, Peter F. Preparing Tomorrow Business Leader Today Peter F. Drucker. Prentice-Hall.
ציטוט MLADrucker, Peter F. Preparing Tomorrow Business Leader Today Peter F. Drucker. Prentice-Hall.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.