Gaya APA
English conversation practice. (1970).
tempaterbit:
penerbit.
Gaya Chicago
English conversation practice.
Edisi.
tempaterbit:
penerbit,
1970.
Text.
Gaya MLA
English conversation practice.
Edisi.
tempaterbit:
penerbit,
1970.
Text.
Gaya Turabian
English conversation practice.
tempaterbit:
penerbit,
1970.
Print.