Gaya APA
The world book encyclopedia S-Sn volume 17. (2007).
Chicago:
World Book, Inc.
Gaya Chicago
The world book encyclopedia S-Sn volume 17.
.
Chicago:
World Book, Inc,
2007.
Text.
Gaya MLA
The world book encyclopedia S-Sn volume 17.
.
Chicago:
World Book, Inc,
2007.
Text.
Gaya Turabian
The world book encyclopedia S-Sn volume 17.
Chicago:
World Book, Inc,
2007.
Print.