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 Kopet Dag:

"

The word köpet originates from the Turkmen language where "köp" means "a lot" or "many" and the word "dag" means "mountain" or "peak". So, Köpetdag translates from Turkmen as "Many mountains (peaks)". In Persian koppeh means "pile" or "heap", and the word dag or dagh means "mountain" in Turkic. So, the Persian version of Kopet Dagh or Koppeh Dagh could be defined as "the mountain that is piled or heaped" and therefore the words could mean "piled or hilly mountains" or "low hills" in general.