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 Dwarf (folklore):

"

The common Proto-Germanic form is generally reconstructed as *dwergaz.[1][3] A different etymology traces it to Proto-Germanic *dwezgaz, with the r sound being the product of Verner's Law[citation needed]. Linguist Anatoly Liberman connects the Germanic word with Modern English dizzy, suggesting a link between the etymology and their role in inflicting mental diseases on humans, similar to some other supernatural beings in Germanic folklore such as elves.[4]