Stieghorst, Tom (October 19, 2007), "Chalk's Airlines loses flight license", South Florida Sun-Sentinel, South Palm Beach County Edition, pp. 1A, 6A, archived from the original on 2013-12-17, retrieved 2012-06-26
Administration, Chalk's International Airlines, archived from the original on December 23, 2005, retrieved May 12, 2010
Stieghorst, Tom (October 19, 2007), "Chalk's Airlines loses flight license", South Florida Sun-Sentinel, South Palm Beach County Edition, pp. 1A, 6A, archived from the original on 2013-12-17, retrieved 2012-06-26