HELLER ROBERT. (2004). COMPLETE GUIDE TO MODERN MANAGEMENT. JAICO PUBLISHING HOUSE.
Cita Chicago (17th ed.)HELLER ROBERT. COMPLETE GUIDE TO MODERN MANAGEMENT. MUMAI: JAICO PUBLISHING HOUSE, 2004.
Cita MLA (9th ed.)HELLER ROBERT. COMPLETE GUIDE TO MODERN MANAGEMENT. JAICO PUBLISHING HOUSE, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.