APA Style
Riley, C.
(2013).
Spymasters (The 39 Clues: The Cahill Files)
.
U.S.A:
Scolastic Inc.
MLA Style
Riley, Clifford.
"Spymasters (The 39 Clues: The Cahill Files)".
U.S.A:
Scolastic Inc,
2013.
Printed Book.