Gaya APA
THE WORLD Book Encyclopedi.--U.V.Vol.20. (2006).
Chicago:
World Book.
Gaya Chicago
THE WORLD Book Encyclopedi.--U.V.Vol.20.
.
Chicago:
World Book,
2006.
Reference.
Gaya MLA
THE WORLD Book Encyclopedi.--U.V.Vol.20.
.
Chicago:
World Book,
2006.
Reference.
Gaya Turabian
THE WORLD Book Encyclopedi.--U.V.Vol.20.
Chicago:
World Book,
2006.
Reference.