Bittel, L. R. (1990). What every supervisor should know (6th ed.). McGraw-Hill.
Chicago Style (17th ed.) CitationBittel, Lester R. What Every Supervisor Should Know. 6th ed. New York: McGraw-Hill, 1990.
ציטוט MLABittel, Lester R. What Every Supervisor Should Know. 6th ed. McGraw-Hill, 1990.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.