APA (7th ed.) Zitazioa

HELFERT, E. A. (1196). Techniques of financial analysis. Richard D. Irwin.

Chicago Style (17th ed.) Zitazioa

HELFERT, Erich A. Techniques of Financial Analysis. Homewood, Ill: Richard D. Irwin, 1196.

MLA (9th ed.) Zitazioa

HELFERT, Erich A. Techniques of Financial Analysis. Richard D. Irwin, 1196.