Citazione Stile APA (7a Edizione)

Helfert, E. A. (1997). Techniques of financial analysis: A modern approach (9thed.). Irwin.

Citazione stile Chigago Style (17a edizione)

Helfert, Erich A. Techniques of Financial Analysis: A Modern Approach. 9thed. Chicago: Irwin, 1997.

Citatione MLA (9a ed.)

Helfert, Erich A. Techniques of Financial Analysis: A Modern Approach. 9thed. Irwin, 1997.