Gaya APA
Heaton, J B, Methold, K. (1980).
Understanding modern English .
Hongkong:
Longman.
Gaya Chicago
Heaton, J B, Methold, K.
Understanding modern English.
Hongkong:
Longman,
1980.
Text.
Gaya MLA
Heaton, J B, Methold, K.
Understanding modern English.
Hongkong:
Longman,
1980.
Text.
Gaya Turabian
Heaton, J B, Methold, K.
Understanding modern English.
Hongkong:
Longman,
1980.
Print.