Allen, L. A. (1975). Professional management: New concepts and proven practices. Tata McGraw-Hill.
Chicago-стиль цитированияAllen, Louis A. Professional Management: New Concepts and Proven Practices. Tata McGraw-Hill, 1975.
MLA-цитированиеAllen, Louis A. Professional Management: New Concepts and Proven Practices. Tata McGraw-Hill, 1975.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.