File:Facebook logo (square).png - Wikimedia Commons
English: Squared Facebook logo as of 2013. Nederlands: Vierkant Facebook- logo sinds 2013. Date, 9 June 2013, 10:11:54. Source, facebook.com.
English: Squared Facebook logo as of 2013. Nederlands: Vierkant Facebook- logo sinds 2013. Date, 9 June 2013, 10:11:54. Source, facebook.com.
