Gaya APA
Lougheed, L. (2011).
Barron's Essential Words for the IELTS .
United States of America:
Barron's Educational Series. Inc.
Gaya MLA
Lougheed, Lin.
"Barron's Essential Words for the IELTS".
United States of America:
Barron's Educational Series. Inc,
2011.
VCD / DVD.