Gaya APA
Sudarwati, T, M. et al (2009).
Look Ahead An English Course For Senior High School Students Year X (cetakan 13).
Jakarta:
Erlangga.
Gaya MLA
Sudarwati, Th., M.. et al.
"Look Ahead An English Course For Senior High School Students Year X".
cetakan 13
Jakarta:
Erlangga,
2009.
Text.