Gaya APA
Penelope and the monsters. (2007).
Jakarta:
Erlangga.
Gaya Chicago
Penelope and the monsters.
.
Jakarta:
Erlangga,
2007.
.
Gaya MLA
Penelope and the monsters.
.
Jakarta:
Erlangga,
2007.
.
Gaya Turabian
Penelope and the monsters.
Jakarta:
Erlangga,
2007.
.