Gaya APA
BALLIN, W.H.. (1990).
Perfect Your English;The Easy Way .
Hertfordshire:
Prentice Hall International (uk) Ltd.
Gaya Chicago
BALLIN, W.H..
Perfect Your English;The Easy Way.
Hertfordshire:
Prentice Hall International (uk) Ltd,
1990.
Text.
Gaya MLA
BALLIN, W.H..
Perfect Your English;The Easy Way.
Hertfordshire:
Prentice Hall International (uk) Ltd,
1990.
Text.
Gaya Turabian
BALLIN, W.H..
Perfect Your English;The Easy Way.
Hertfordshire:
Prentice Hall International (uk) Ltd,
1990.
Print.