Gaya APA
Grace, T, M, S, E.
(2007).
Look Ahead 2 : An English Course
.
Hoboken, NJ:
Wiley.
Gaya MLA
Grace, Th., M., Sudarwati,, Eudia.
"Look Ahead 2 : An English Course".
Hoboken, NJ:
Wiley,
2007.
Text.