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 Anna Amalia, Abbess of Quedlinburg:

"

Princess-abbess Anna Amalia died on 30 March 1787 at the age of 63[4] and was buried in Berlin Cathedral. She was succeeded by her niece, Princess Sophia Albertina of Sweden (1753–1829).[citation needed]