Gaya APA
Walter, Ingo. (1989).
The Secret Money Market .
New York:
HARPER BUSINESS.
Gaya Chicago
Walter, Ingo.
The Secret Money Market.
New York:
HARPER BUSINESS,
1989.
.
Gaya MLA
Walter, Ingo.
The Secret Money Market.
New York:
HARPER BUSINESS,
1989.
.
Gaya Turabian
Walter, Ingo.
The Secret Money Market.
New York:
HARPER BUSINESS,
1989.
.