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 Flatulence:

"

Historical comment on the ability to fart at will is observed as early as Saint Augustine's The City of God (5th century A.D.). Augustine mentions "people who produce at will without any stench such rhythmical sounds from their fundament that they appear to be making music even from that quarter."[1] Intentional passing of gas and its use as entertainment for others appear to have been somewhat well known in pre-modern Europe, according to mentions of it in medieval and later literature, including Rabelais.[citation needed]