Gaya APA
Helfert, E, A.
(1989).
Techniques of Financial Analysis Edisi Ke-6
(
6)
.
Tokyo:
Richard D. Darwi, Inc.
Gaya MLA
Helfert, Erich, A..
"Techniques of Financial Analysis Edisi Ke-6".
6
Tokyo:
Richard D. Darwi, Inc,
1989.
Text.