Sources

We used several sources when we adapted this article. Here are some of them.
Headline Publication Byline Link
The Cruelest Show on Earth Mother Jones By Deborah Nelson Link
Elephants in Circuses: Training & Tragedy PETA Link
The long battle to remove elephants from the Ringling Bros. circus The Washington Post Elahe Izadi Link
Does a circus without elephants have a future? CNN By Todd Leopold, CNN Link