Gaya APA
Gibbs, Stuart. (2012).
Spy school .
New York:
simon & schuster.
Gaya Chicago
Gibbs, Stuart.
Spy school.
New York:
simon & schuster,
2012.
Buku.
Gaya MLA
Gibbs, Stuart.
Spy school.
New York:
simon & schuster,
2012.
Buku.
Gaya Turabian
Gibbs, Stuart.
Spy school.
New York:
simon & schuster,
2012.
Buku.