Gaya APA
the World book Encyclopedia volume 18 :. (1985).
Chicago:
World book inc.
Gaya Chicago
the World book Encyclopedia volume 18 :.
.
Chicago:
World book inc,
1985.
Buku.
Gaya MLA
the World book Encyclopedia volume 18 :.
.
Chicago:
World book inc,
1985.
Buku.
Gaya Turabian
the World book Encyclopedia volume 18 :.
Chicago:
World book inc,
1985.
Buku.