[1] UXPin, e-book Web Design Book of Trends 2015 & 2016, Copyright © 2015 by UXPin Inc.Search in Google Scholar
[2] http://designingfortheweb.co.ukSearch in Google Scholar
[3] UXPin, e-book Mobile Design Book of Trends 2015 & 2016, Copyright © 2015 by UXPin Inc.Search in Google Scholar