APA

Akhgar, Bayerl P. S. & Sampson F. (2016). Open source intelligence investigation from strategy to implementation. New York, NY: Springer Berlin Heidelberg.

Chicago

Akhgar, Bayerl P Saskia and Sampson Fraser. 2016. Open source intelligence investigation from strategy to implementation. New York, NY: Springer Berlin Heidelberg.

Harvard

Akhgar, Bayerl P. S. and Sampson F. (2016). Open source intelligence investigation from strategy to implementation. New York, NY: Springer Berlin Heidelberg.

MLA

Akhgar, Bayerl P Saskia and Sampson Fraser. Open source intelligence investigation from strategy to implementation. New York, NY: Springer Berlin Heidelberg. 2016.