Gaya APA
Weiler,E.T, ., Martin,W.H, .
(1958).
The American Economic System
(
Revised Ed)
.
New York:
The Macmillan Company.
Gaya MLA
Weiler,E.T, ., Martin,W.H, .
"The American Economic System".
Revised Ed
New York:
The Macmillan Company,
1958.
Text.