Gaya APA
Grace, T, M, , S, , , E. (2007).
Look Ahead An English Course For Senior High School Year XII KTSP 2006 .
Jakarta:
Erlangga.
Gaya MLA
Grace, Th., M., , Sudarwati, , , Eudia.
"Look Ahead An English Course For Senior High School Year XII KTSP 2006".
Jakarta:
Erlangga,
2007.
Text.