Gaya APA
Economic Methodes. (1963).
Amerika:
MCGraw Hill Book Company.
Gaya Chicago
Economic Methodes.
Ed. 2.
Amerika:
MCGraw Hill Book Company,
1963.
.
Gaya MLA
Economic Methodes.
Ed. 2.
Amerika:
MCGraw Hill Book Company,
1963.
.
Gaya Turabian
Economic Methodes.
Amerika:
MCGraw Hill Book Company,
1963.
.