Penggayaan APA
Lougheed. (2016).
IELTS Practice Exams .
America:
Barrons.
Chicago Style
Lougheed.
IELTS Practice Exams.
America:
Barrons,
2016.
Text.
MLA Style
Lougheed.
IELTS Practice Exams.
America:
Barrons,
2016.
Text.
Turabian Style
Lougheed.
IELTS Practice Exams.
America:
Barrons,
2016.
Print.