Gaya APA
Comparative Economic Systems. (1961).
:
Harper & Brothers.
Gaya Chicago
Comparative Economic Systems.
Ed.6.
:
Harper & Brothers,
1961.
.
Gaya MLA
Comparative Economic Systems.
Ed.6.
:
Harper & Brothers,
1961.
.
Gaya Turabian
Comparative Economic Systems.
:
Harper & Brothers,
1961.
.