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 Smog:

"

Similar to Mexico City, air pollution is easily trapped in the Santiago valley in Chile, located between the Andes and the Chilean Coast Range, making the city the most smog-plagued in South America. The city's high latitude (31 degrees south) and dry weather during most of the year contribute to the problem.[citation needed]