Gaya APA
Grace, T, M, S, , D, E. (2007).
Look A head 3 : An English Course For Senior High School Student Year XII .
Jakarta:
Erlangga.
Gaya MLA
Grace, Th., M., Sudarwati, , Dan, Eudia.
"Look A head 3 : An English Course For Senior High School Student Year XII".
Jakarta:
Erlangga,
2007.
Text.