Gaya APA
The World Book # 6. (1992).
:
World Book International.
Gaya Chicago
The World Book # 6.
.
:
World Book International,
1992.
Reference.
Gaya MLA
The World Book # 6.
.
:
World Book International,
1992.
Reference.
Gaya Turabian
The World Book # 6.
:
World Book International,
1992.
Reference.