Não informado. (2007). Engineering & Technology. Institution of Engineering and Technology.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Engineering & Technology. Stevenage, Inglaterra: Institution of Engineering and Technology, 2007.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Engineering & Technology. Institution of Engineering and Technology, 2007.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.