Allen,Louis A. (1975). Professional Management: New Concepts and Proven Practices. tata.
Chicago Edition CitationAllen,Louis A. Professional Management: New Concepts and Proven Practices. new delhi: tata, 1975.
ציטוט MLAAllen,Louis A. Professional Management: New Concepts and Proven Practices. tata, 1975.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.