Gaya APA
Lougheed, L. (2007).
Barron's Toeic: Test Of English For International Comumnication (ed.4).
Jakarta Timur:
UniversitasTerbuka.
Gaya MLA
Lougheed, Lin.
"Barron's Toeic: Test Of English For International Comumnication".
ed.4
Jakarta Timur:
UniversitasTerbuka,
2007.
Text.