Gaya APA
English On Sky For Junior High School Students 2. (2004).
Jakarta:
Erlangga.
Gaya Chicago
English On Sky For Junior High School Students 2.
2004.
Jakarta:
Erlangga,
2004.
Text.
Gaya MLA
English On Sky For Junior High School Students 2.
2004.
Jakarta:
Erlangga,
2004.
Text.
Gaya Turabian
English On Sky For Junior High School Students 2.
Jakarta:
Erlangga,
2004.
Print.