https://history.nasa.gov/SP-4217/ch19.htm （页面存档备份，存于互联网档案馆） Roberto Diaz-Martin, "The Recent History of Satellite Communications in Cuba", Selection of a Color Standard Archived December 25, 2017, at the Wayback Machine, in Beyond the Ionosphere: Fifty Years of Satellite Communication (NASA SP-4217, 1997).(英文)
news.google.com
"Color It Expensive". （页面存档备份，存于互联网档案馆）The Calgary Herald. Calgary, Alberta. September 1, 1966. p. 4. Retrieved April 14, 2012.卡爾加里先驅報 Calgary Herald (英文)
"Color It Expensive". （页面存档备份，存于互联网档案馆）The Calgary Herald. Calgary, Alberta. September 1, 1966. p. 4. Retrieved April 14, 2012.卡爾加里先驅報 Calgary Herald (英文)
https://history.nasa.gov/SP-4217/ch19.htm （页面存档备份，存于互联网档案馆） Roberto Diaz-Martin, "The Recent History of Satellite Communications in Cuba", Selection of a Color Standard Archived December 25, 2017, at the Wayback Machine, in Beyond the Ionosphere: Fifty Years of Satellite Communication (NASA SP-4217, 1997).(英文)
