Gaya APA
West, Michael. (1973).
Improve Your English (Cet.1).
London:
Longman.
Gaya Chicago
West, Michael.
Improve Your English.
Cet.1
London:
Longman,
1973.
Text.
Gaya MLA
West, Michael.
Improve Your English.
Cet.1
London:
Longman,
1973.
Text.
Gaya Turabian
West, Michael.
Improve Your English.
Cet.1
London:
Longman,
1973.
Print.