Gaya APA
Stroud, J.
(2007).
The Bartimaeus Trilogy#3 : Ptolemy's Gate
.
Jakarta:
Gramedia Pustaka Utama.
Gaya MLA
Stroud, Jonathan.
"The Bartimaeus Trilogy#3 : Ptolemy's Gate".
Jakarta:
Gramedia Pustaka Utama,
2007.
Text.