Gaya APA
The World Book Encyclopedia : E Volume 6. (1980).
chicago:
World book.
Gaya Chicago
The World Book Encyclopedia : E Volume 6.
.
chicago:
World book,
1980.
Buku.
Gaya MLA
The World Book Encyclopedia : E Volume 6.
.
chicago:
World book,
1980.
Buku.
Gaya Turabian
The World Book Encyclopedia : E Volume 6.
chicago:
World book,
1980.
Buku.