|Look up caja#Spanish in Wiktionary, the free dictionary.|
- Note about pronunciation, October 2007.
- Html Service: Caja Sanitization 2013/06/28, retrieved 2013/07/25
- Tim Oren's Due Diligence: Web 2.0 Investors: Pay Attention To Caja, 2008/04/11, retrieved 2008/06/08
- OpenSocial API Blog: Launched: Yahoo!'s First Implementation of OpenSocial Support, 2008/10/28, retrieved 2008/11/15