APA (7th ed.) Zitazioa

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

Chicago Style (17th ed.) Zitazioa

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

MLA (9th ed.) Zitazioa

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