Gaya APA
LOUGHEED, L. (2013).
IELTS (International English Language Testing System) Practice Exams 2nd ed ( Auto CD 1-2 ) (2).
New York:
Barrons.
Gaya MLA
LOUGHEED, Lin.
"IELTS (International English Language Testing System) Practice Exams 2nd ed ( Auto CD 1-2 )".
2
New York:
Barrons,
2013.
Printed.