Helfert, E. A. (2003). Techniques of financial analysis: A guide to value creation (11th ed.). McGraw-Hill.
Chicago-viite (17. p.)Helfert, Erich A. Techniques of Financial Analysis: A Guide to Value Creation. 11th ed. Boston: McGraw-Hill, 2003.
MLA-viite (9. p.)Helfert, Erich A. Techniques of Financial Analysis: A Guide to Value Creation. 11th ed. McGraw-Hill, 2003.
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