• http://en.wikipedia.org/wiki/Call_centre
• http://workathomemoms.about.com/od/callcenterdataentry/a/Call-Center-Work.htm
• http://www.gostudy.mobi/careers/View.aspx?oid=751
• http://www.callcenterphonesystems.net/
• http://nightwriter.hubpages.com/hub/Work-At-Home-Call-Center-and-Customer-Service-Jobs
• http://workathomeresourceguide.com/companies-hiring-home-workers/callcenters/
• http://www.wisegeek.com/what-is-a-call-center-job.htm
• http://www.wisegeek.com/what-are-the-different-types-of-call-center-technology.htm
• http://www.bbc.co.uk/news/magazine-15060641