Analysis of information sources in references of the Wikipedia article "List of best-selling girl groups" in English language version.
Hits such as Don't Cha and Buttons have helped them sell more than 54 million records.
... Girls' Generation have racked up sales of well over 30m in digital singles and 4.4m albums ...
... Girls' Generation have racked up sales of well over 30m in digital singles and 4.4m albums ...