Allen, L. A. (1975). Professional management: New concepts and proven practices. Tata McGraw-Hill.
Chicago Edition CitationAllen, Louis A. Professional Management: New Concepts and Proven Practices. Tata McGraw-Hill, 1975.
ציטוט MLAAllen, Louis A. Professional Management: New Concepts and Proven Practices. Tata McGraw-Hill, 1975.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.