Gordon J. MacDonald. "Environment: Evolution of a Concept" (PDF). p. 2. The Native American name for Los Angeles was Yang na, which translates into "the valley of smoke."
Bowman, Chris. „Smoke is Normal – for 1800“. The Sacramento Bee (2008-yil 8-iyul). 2008-yil 9-iyulda asl nusxadan arxivlangan. Qaraldi: 2023-yil 5-sentyabr.
sfgate.com
Sullivan, Ron. „Roots of native names“. San Francisco Chronicle (2002-yil 7-dekabr). Qaraldi: 2023-yil 5-sentyabr.
web.archive.org
Bowman, Chris. „Smoke is Normal – for 1800“. The Sacramento Bee (2008-yil 8-iyul). 2008-yil 9-iyulda asl nusxadan arxivlangan. Qaraldi: 2023-yil 5-sentyabr.