Bull, G. (1977). Directors Hand Book (2nd ed.). McGraw-Hill.
Chicago Edition CitationBull, George. Directors Hand Book. 2nd ed. Toronto: McGraw-Hill, 1977.
ציטוט MLABull, George. Directors Hand Book. 2nd ed. McGraw-Hill, 1977.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.