Gaya APA
Helfert, E, A.
(1967).
Techniques of Financial Analysis
(
Revised Edition)
.
Homewood:
Richard D Irwin, Inc..
Gaya MLA
Helfert, Erich, A.
"Techniques of Financial Analysis".
Revised Edition
Homewood:
Richard D Irwin, Inc.,
1967.
Teksbook.