Lua APA (7ú heag.)
Norris, P. (2008). Spies in the Sky: Surveillance Satellites in War and Peace. Praxis. https://doi.org/10.1007/978-0-387-71673-2
Lua i Stíl Chicago (17ú heag.)
Norris, Pat. Spies in the Sky: Surveillance Satellites in War and Peace. New York, NY: Praxis, 2008. https://doi.org/10.1007/978-0-387-71673-2.
Lua MLA (9ú heag.)
Norris, Pat. Spies in the Sky: Surveillance Satellites in War and Peace. Praxis, 2008. https://doi.org/10.1007/978-0-387-71673-2.
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