Gaya APA
English for specific purposes : economics. (1991).
tempaterbit:
penerbit.
Gaya Chicago
English for specific purposes : economics.
Edisi.
tempaterbit:
penerbit,
1991.
Text.
Gaya MLA
English for specific purposes : economics.
Edisi.
tempaterbit:
penerbit,
1991.
Text.
Gaya Turabian
English for specific purposes : economics.
tempaterbit:
penerbit,
1991.
Print.