"Chart Track". Irish Singles Chart. Irish Recorded Music Association. June 7, 2012. Archived from the original on December 2, 2013. Retrieved June 22, 2012.
"Chart Track". Irish Singles Chart. Irish Recorded Music Association. June 14, 2012. Archived from the original on July 21, 2015. Retrieved June 22, 2012.
"ČNS IFPI" (in Czech). Hitparáda – Radio Top 100 Oficiální. IFPI Czech Republic. Note: Change the chart to CZ – RADIO – TOP 100 and insert 201229 into search.
hitparadask.ifpicr.cz
"ČNS IFPI" (in Slovak). Hitparáda – Radio Top 100 Oficiálna. IFPI Czech Republic. Note: insert 201220 into search. Retrieved May 3, 2012.
"Media Forest – Weekly Charts. Media Forest. Retrieved August 21, 2012. Note: Romanian and international positions are rendered together by the number of plays before resulting an overall chart.
"Chart Track". Irish Singles Chart. Irish Recorded Music Association. June 7, 2012. Archived from the original on December 2, 2013. Retrieved June 22, 2012.
"Chart Track". Irish Singles Chart. Irish Recorded Music Association. June 14, 2012. Archived from the original on July 21, 2015. Retrieved June 22, 2012.