"ČNS IFPI" (in Czech). Hitparáda – Digital Top 100 Oficiální. IFPI Czech Republic. Note: Select 10. týden 2020 in the date selector. Retrieved March 10, 2020.
hitparada.ifpicr.cz
"ČNS IFPI" (in Slovak). Hitparáda – Singles Digital Top 100 Oficiálna. IFPI Czech Republic. Note: Select SINGLES DIGITAL - TOP 100 and insert 202010 into search. Retrieved March 10, 2020.