Não informado. Swiss technics. Swiss Association of Machinery Manufacturers, Swiss Office for the Development of Trade.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Swiss Technics. Lausanne, Suíça: Swiss Association of Machinery Manufacturers, Swiss Office for the Development of Trade.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Swiss Technics. Swiss Association of Machinery Manufacturers, Swiss Office for the Development of Trade.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.