Gaya APA
Great Answers To tough. (2001).
Jakarta:
Erlangga.
Gaya Chicago
Great Answers To tough.
.
Jakarta:
Erlangga,
2001.
Text.
Gaya MLA
Great Answers To tough.
.
Jakarta:
Erlangga,
2001.
Text.
Gaya Turabian
Great Answers To tough.
Jakarta:
Erlangga,
2001.
Print.