Steve Parker. (2008). Great Junior Encyclopedia - Electronocs and Technology (2013.). Parragon Publication.
Lua i Stíl Chicago (17ú heag.)Steve Parker. Great Junior Encyclopedia - Electronocs and Technology. 2013. Parragon Publication, 2008.
Lua MLA (9ú heag.)Steve Parker. Great Junior Encyclopedia - Electronocs and Technology. 2013. Parragon Publication, 2008.
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