Gaya APA
The world book encyclopedia A volume 1. (2007).
Chicago:
World Book, Inc.
Gaya Chicago
The world book encyclopedia A volume 1.
.
Chicago:
World Book, Inc,
2007.
Text.
Gaya MLA
The world book encyclopedia A volume 1.
.
Chicago:
World Book, Inc,
2007.
Text.
Gaya Turabian
The world book encyclopedia A volume 1.
Chicago:
World Book, Inc,
2007.
Print.