«Contact Us [Архівовано 12 червня 2017 у Wayback Machine.].» Proton Holdings. Retrieved on July 24, 2016. «Proton Holdings Berhad Centre of Excellence Complex, KM33.8 Westbound, Shah Alam Expressway 47600, Subang Jaya, Selangor Darul Ehsan Malaysia» (англ.)
web.archive.org
«Contact Us [Архівовано 12 червня 2017 у Wayback Machine.].» Proton Holdings. Retrieved on July 24, 2016. «Proton Holdings Berhad Centre of Excellence Complex, KM33.8 Westbound, Shah Alam Expressway 47600, Subang Jaya, Selangor Darul Ehsan Malaysia» (англ.)
