Gaya APA
The Economy Today. (1980).
Amerika:
Random House.
Gaya Chicago
The Economy Today.
Ed. 4.
Amerika:
Random House,
1980.
.
Gaya MLA
The Economy Today.
Ed. 4.
Amerika:
Random House,
1980.
.
Gaya Turabian
The Economy Today.
Amerika:
Random House,
1980.
.