Gaya APA
Passport to the world. (2012).
tempaterbit:
penerbit.
Gaya Chicago
Passport to the world.
Edisi.
tempaterbit:
penerbit,
2012.
Text.
Gaya MLA
Passport to the world.
Edisi.
tempaterbit:
penerbit,
2012.
Text.
Gaya Turabian
Passport to the world.
tempaterbit:
penerbit,
2012.
Print.