APA Style
Williams, Paul. (2013).
Security Studies : An introduction .
London:
Routledge.
Chicago Style
Williams, Paul.
Security Studies : An introduction.
London:
Routledge,
2013.
Text.
MLA Style
Williams, Paul.
Security Studies : An introduction.
London:
Routledge,
2013.
Text.
Turabian Style
Williams, Paul.
Security Studies : An introduction.
London:
Routledge,
2013.
Print.