Gaya APA
Grace, M, S, E. (2007).
Look Ahead : An English Course For Senior High School Students Year X .
Jakarta:
Erlangga.
Gaya MLA
Grace, M., Sudarwati,, Eudia.
"Look Ahead : An English Course For Senior High School Students Year X".
Jakarta:
Erlangga,
2007.
Koleksi Cetak.