Gaya APA
Preston & Child The Obsidian Chamber. (2016).
London:
Head of Zeus.
Gaya Chicago
Preston & Child The Obsidian Chamber.
.
London:
Head of Zeus,
2016.
Buku.
Gaya MLA
Preston & Child The Obsidian Chamber.
.
London:
Head of Zeus,
2016.
Buku.
Gaya Turabian
Preston & Child The Obsidian Chamber.
London:
Head of Zeus,
2016.
Buku.