Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Ólafur Ragnar Grímsson:

"

He married Guðrún Katrín Þorbergsdóttir in 1974, who gave birth to twin daughters the following year, Guðrún Tinna, a graduate in business studies, and Svanhildur Dalla, a graduate both in political science and law.[1][2] Guðrún Katrín was a popular figure in Iceland, and was mourned nationwide when she died of leukaemia in 1998.