GILLMAN, Ollie. Beloved author Jackie Collins only told older sister Joan two WEEKS before she died that she had been battling breast cancer for six years - because she didn't want to be a burden [online]. Mail Online, 2015-09-20 [cit. 2016-04-20]. Dostupné online.
people.com
LEONARD, Elizabeth. Joan Collins on Sister Jackie's Death: 'I Am Completely Devastated' [online]. PEOPLE.com, 2015-09-19 [cit. 2016-04-20]. Dostupné online.
