[1] Lastminute.com, "Get Christmas right this year", 16. Dezember 2014
[2] National Retail Federation "Holiday Survival Kit 2014", Oktober 2014
[3] Ideal Home Show at Christmas Survey, Oktober 2014
[4] Experian and IMRG Capgemini e-Retail Sales Index, November 2014
[5] CACI research, http://www.retailgazette.co.uk/blog/2015/02/31112-why-brick-and-mortar-is-driving-online-sales Februar 2015
[6] Interne Daten von Google
[7] IMRG Capgemini m-Retail Sales Index
[8] http://www.datamentors.com/blog/5-compelling-reasons-ramp-your-digital-marketing-strategy/ - http://www.sas.com/en_us/insights/marketing/multichannel-marketing.html
[9] BI Intelligence, "The E-Commerce Report", 5. Februar 2015
[10-11] YouTube-Weihnachtsrangliste 2014