Gaya APA
Sage, A., Ekawana, B.
(2011).
Septimus Heap : Syren
(
edisi 1)
.
Jakarta:
matahati.
Gaya MLA
Sage, Angie., Ekawana, Bayu.
"Septimus Heap : Syren".
edisi 1
Jakarta:
matahati,
2011.
Text.