APA-referens (7:e uppl.)

HELFERT ERICH A. (1988). TECHNIQUES OF FINANCIAL ANALYSIS (6.). UNIVERSAL BOOKS.

Chicago-referens (17:e uppl.)

HELFERT ERICH A. TECHNIQUES OF FINANCIAL ANALYSIS. 6. NEW DELHI: UNIVERSAL BOOKS, 1988.

MLA-referens (9:e uppl.)

HELFERT ERICH A. TECHNIQUES OF FINANCIAL ANALYSIS. 6. UNIVERSAL BOOKS, 1988.