APA استشهاد

Helfert, E. A. (1988). Techniques of financial analysis (6.). Universal Book Stall.

استشهاد بنمط شيكاغو

Helfert, Enrich A. Techniques of Financial Analysis. 6. New Delhi: Universal Book Stall, 1988.

MLA استشهاد

Helfert, Enrich A. Techniques of Financial Analysis. 6. Universal Book Stall, 1988.