Singapore's Airports, SG, Page 118
Foreign relations of Taiwan - Wikipedia
Terminals 1 and 3 of Changi Airport to reopen on Sept 1 with enhanced split zones, aircon and ventilation systems - TODAY
The Straits Times 15-06-2020, PDF, Singapore
CHANGI AIRPORT / Terminal 1, 2, 3 & 4, Aviation News, Page 117
Changi Airport's Terminals 1 and 3 reopen from September 1
COVID-19 coronavirus Pandemic in 2020
Shopping, meet-and-greets to return to Changi Airport
Changi Airport Reopens Terminal 1 and 3 to the Public from 1 Sep – BYKidO