Cita APA (7th ed.)

HELFERT ERICH A. (1977). TECHNIQUES OF FINANCIAL ANALYSIS (4TH.). RICHARD D.IRWIN INC.

Cita Chicago (17th ed.)

HELFERT ERICH A. TECHNIQUES OF FINANCIAL ANALYSIS. 4TH. ONTARIO: RICHARD D.IRWIN INC, 1977.

Cita MLA (9th ed.)

HELFERT ERICH A. TECHNIQUES OF FINANCIAL ANALYSIS. 4TH. RICHARD D.IRWIN INC, 1977.