Gaya APA
Academic Writing Course : study skills in English. (2008).
Harlow:
Longmans.
Gaya Chicago
Academic Writing Course : study skills in English.
Ed 3.
Harlow:
Longmans,
2008.
Text.
Gaya MLA
Academic Writing Course : study skills in English.
Ed 3.
Harlow:
Longmans,
2008.
Text.
Gaya Turabian
Academic Writing Course : study skills in English.
Harlow:
Longmans,
2008.
Print.