Byrd Phillips, Lori. «QR codes + Wikipedia = QRpedia». The Children's Museum of Indianapolis, 29-07-2011. Arxivat de l'original el 2012-08-26. [Consulta: 25 agost 2011].
Byrd Phillips, Lori. «QR codes + Wikipedia = QRpedia». The Children's Museum of Indianapolis, 29-07-2011. Arxivat de l'original el 2012-08-26. [Consulta: 25 agost 2011].