https://snookerhq.com/2018/04/09/world-snooker-championship-qualifying-draw/
World Championship qualifiers: Ng On Yee and Reanne Evans in the draw ;
http://www.bbc.co.uk/sport/snooker/43703065
World Championship snooker qualifying 2018: Draw, schedule, results & Eurosport TV coverage times :
https://www.sportinglife.com/snooker/news/crucible-qualifying-schedule-2018/145979
World Championship qualifiers: Ng On Yee and Reanne Evans in the draw ;
http://www.bbc.co.uk/sport/snooker/43703065
World Championship snooker qualifying 2018: Draw, schedule, results & Eurosport TV coverage times :
https://www.sportinglife.com/snooker/news/crucible-qualifying-schedule-2018/145979