Who where Bob Marley's Kids!!?

I am doing a research paper for my college research/composition class on Bob Marley.. I need to know the names of his kids and birth-dates/birth-places.. I CANNOT use wikapedia, since the information is often incorrect.. I have found multiple websites and they all state different names, spelled differently or different birthplaces and some dont say who mothered them, one site says he has 11 kids, when 2 others say 12 or 13. Please help. THANK YOU!!!