Cita APA (7a ed.)

Helfert, E. A. (1972). Techniques of financial analysis (1st printing.). Dow Jones-Irwin.

Cita Chicago Style (17a ed.)

Helfert, Erich A. Techniques of Financial Analysis. 1st printing. Homewood (Illinois): Dow Jones-Irwin, 1972.

Cita MLA (9a ed.)

Helfert, Erich A. Techniques of Financial Analysis. 1st printing. Dow Jones-Irwin, 1972.