Gaya APA
The world book encyclopedia T volume 19. (2007).
Chicago:
World Book.
Gaya Chicago
The world book encyclopedia T volume 19.
.
Chicago:
World Book,
2007.
Text.
Gaya MLA
The world book encyclopedia T volume 19.
.
Chicago:
World Book,
2007.
Text.
Gaya Turabian
The world book encyclopedia T volume 19.
Chicago:
World Book,
2007.
Print.