Analysis of information sources in references of the Wikipedia article "சூலு சுல்தானகம்" in Tamil language version.
The area from Kimanis Bay to the Paitan River not from Sulu but from Brunei
{{cite book}}
: CS1 maint: multiple names: authors list (link)Sultan of Brunei cedes the lands east of Marudu Bay to the Sultanate of Sulu.