APA
Helfert Erich A,, . (1991). Techniques of financial analysis. Madras: Jaico Publishing House.
Chicago
Helfert Erich A,, . 1991. Techniques of financial analysis. Madras: Jaico Publishing House.
Harvard
Helfert Erich A,, . (1991). Techniques of financial analysis. Madras: Jaico Publishing House.
MLA
Helfert Erich A,, . Techniques of financial analysis. Madras: Jaico Publishing House. 1991.