"Tap Three Times". Paul and Storm. June 20, 2014. Archived from the original on October 5, 2016. Retrieved October 3, 2016.
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top30-2.radio2.be
"knock three times - dawn". VRT (in Dutch). Top30-2.radio2.be. Archived from the original on April 9, 2012. Retrieved July 25, 2013. Hoogste notering in de top 30 : 1
"Tap Three Times". Paul and Storm. June 20, 2014. Archived from the original on October 5, 2016. Retrieved October 3, 2016.
"knock three times - dawn". VRT (in Dutch). Top30-2.radio2.be. Archived from the original on April 9, 2012. Retrieved July 25, 2013. Hoogste notering in de top 30 : 1