HELFERT ERICH A. (1992). TECHNIQUES OF FINANCIAL ANALYSIS. JAICO PUBLISHING HOUSE.
Cita Chicago (17th ed.)HELFERT ERICH A. TECHNIQUES OF FINANCIAL ANALYSIS. MUMAI: JAICO PUBLISHING HOUSE, 1992.
Cita MLA (9th ed.)HELFERT ERICH A. TECHNIQUES OF FINANCIAL ANALYSIS. JAICO PUBLISHING HOUSE, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.