Drone warfare / John Kaag & Sarah Kreps. — Cambridge : Polity Press, 2014. — 195 s. — (War and Conflict in the Modern World). — ISBN:978-0-7456-8099-6
Drone warfare / John Kaag & Sarah Kreps. — Cambridge : Polity Press, 2014. — 195 s. — (War and Conflict in the Modern World). — ISBN:978-0-7456-8099-6