Gaya APA

Helfert, E, A. (2001). FINANCIAL ANALYSIS TOOLS AND TECHNIQUES: A Guide for Managers . United States of America: The McGrawHill Companies.

Gaya MLA

Helfert, Erich, A.. "FINANCIAL ANALYSIS TOOLS AND TECHNIQUES: A Guide for Managers". United States of America: The McGrawHill Companies, 2001. Text.