Gaya APA
al., E. et al (2005).
Look Ahead 3: An English Course For Senior High School Students Year Xii (sma Dan Ma) .
Jakarta:
Erlangga.
Gaya MLA
al., Et. et al.
"Look Ahead 3: An English Course For Senior High School Students Year Xii (sma Dan Ma)".
Jakarta:
Erlangga,
2005.
Text.