Citazione Stile APA (7a Edizione)

HELFERT ERICH A. (2000). TECHNIQUES OF FINANCIAL ANALYSIS (10TH.). MCGRAW-HILL.

Citazione stile Chigago Style (17a edizione)

HELFERT ERICH A. TECHNIQUES OF FINANCIAL ANALYSIS. 10TH. NEW YORK: MCGRAW-HILL, 2000.

Citatione MLA (9a ed.)

HELFERT ERICH A. TECHNIQUES OF FINANCIAL ANALYSIS. 10TH. MCGRAW-HILL, 2000.