Gaya APA
When you're worried. (2007).
tempaterbit:
penerbit.
Gaya Chicago
When you're worried.
Edisi.
tempaterbit:
penerbit,
2007.
Text.
Gaya MLA
When you're worried.
Edisi.
tempaterbit:
penerbit,
2007.
Text.
Gaya Turabian
When you're worried.
tempaterbit:
penerbit,
2007.
Print.