Gaya APA
Practice your english. (1960).
tempaterbit:
penerbit.
Gaya Chicago
Practice your english.
Edisi.
tempaterbit:
penerbit,
1960.
Text.
Gaya MLA
Practice your english.
Edisi.
tempaterbit:
penerbit,
1960.
Text.
Gaya Turabian
Practice your english.
tempaterbit:
penerbit,
1960.
Print.