Gaya APA
World geography developed. (1983).
:
DC Health and Co.
Gaya Chicago
World geography developed.
.
:
DC Health and Co,
1983.
.
Gaya MLA
World geography developed.
.
:
DC Health and Co,
1983.
.
Gaya Turabian
World geography developed.
:
DC Health and Co,
1983.
.