Gaya APA

Sudarwati, T, M. (2009). Look Ahead 2 An English Course For Senior High School Students Year XI Science and Social Study Program . Jakarta: Elekmedia Komputindo.

Gaya MLA

Sudarwati, Th., M.. "Look Ahead 2 An English Course For Senior High School Students Year XI Science and Social Study Program". Jakarta: Elekmedia Komputindo, 2009. Text.