"ILS and MELCO Announce the Contract for Launch of the Turksat 4A and Turksat 4B Satellites on ILS Proton".
5 Temmuz 2015 tarihinde kaynağından arşivlendi.  ^ "ILS and MELCO Announce the Contract for Launch of the Turksat 4A and Turksat 4B Satellites on ILS Proton".