Gaya APA
Allen, Mark, Powell, Debra, Dolby, Dickie. (2007).
IELTS Graduation .
London:
Macmillan Writing.
Gaya Chicago
Allen, Mark, Powell, Debra, Dolby, Dickie.
IELTS Graduation.
London:
Macmillan Writing,
2007.
Text.
Gaya MLA
Allen, Mark, Powell, Debra, Dolby, Dickie.
IELTS Graduation.
London:
Macmillan Writing,
2007.
Text.
Gaya Turabian
Allen, Mark, Powell, Debra, Dolby, Dickie.
IELTS Graduation.
London:
Macmillan Writing,
2007.
Print.