Gaya APA
Distiction : english for advanced learners. (1997).
tempaterbit:
penerbit.
Gaya Chicago
Distiction : english for advanced learners.
Edisi.
tempaterbit:
penerbit,
1997.
Text.
Gaya MLA
Distiction : english for advanced learners.
Edisi.
tempaterbit:
penerbit,
1997.
Text.
Gaya Turabian
Distiction : english for advanced learners.
tempaterbit:
penerbit,
1997.
Print.