Gaya APA
The Invisible World. (2000).
Bangor:
Better Bookkeeping Centre.
Gaya Chicago
The Invisible World.
.
Bangor:
Better Bookkeeping Centre,
2000.
Text.
Gaya MLA
The Invisible World.
.
Bangor:
Better Bookkeeping Centre,
2000.
Text.
Gaya Turabian
The Invisible World.
Bangor:
Better Bookkeeping Centre,
2000.
Print.