Gaya APA
Sudarwati, T, M. et al (2007).
Look Ahead Book 1 : An English Course for Senior High School Students Year X .
Jakarta:
Erlangga.
Gaya MLA
Sudarwati, Th., M.. et al.
"Look Ahead Book 1 : An English Course for Senior High School Students Year X".
Jakarta:
Erlangga,
2007.
Text.