(15 June 1961). Unlucky KLM (PDF). Flight. Gearchiveerd van origineel op 7 april 2014. Geraadpleegd op 1 May 2012. “These incidents come on top of the complete loss, with all 61 on board, of KLM's newest Douglas DC-8 off Lisbon, when under charter to Viasa (Venezuela).”.
(15 June 1961). Unlucky KLM (PDF). Flight. Gearchiveerd van origineel op 7 april 2014. Geraadpleegd op 1 May 2012. “These incidents come on top of the complete loss, with all 61 on board, of KLM's newest Douglas DC-8 off Lisbon, when under charter to Viasa (Venezuela).”.