Gaya APA
Modern american english book four. (1978).
tempaterbit:
penerbit.
Gaya Chicago
Modern american english book four.
Edisi.
tempaterbit:
penerbit,
1978.
Text.
Gaya MLA
Modern american english book four.
Edisi.
tempaterbit:
penerbit,
1978.
Text.
Gaya Turabian
Modern american english book four.
tempaterbit:
penerbit,
1978.
Print.