Gaya APA
Hanna. (2002).
Believe and acheve! .
Jakarta:
Erlangga.
Gaya Chicago
Hanna.
Believe and acheve!.
Jakarta:
Erlangga,
2002.
Text.
Gaya MLA
Hanna.
Believe and acheve!.
Jakarta:
Erlangga,
2002.
Text.
Gaya Turabian
Hanna.
Believe and acheve!.
Jakarta:
Erlangga,
2002.
Print.