1. #modul1a – prezentare realizata pentru Curs postuniversitar la DPPD UPT Instruire asistata de calculator Aprilie 2009 Alina Sima http://www.cirip.ro/grup/iac09
2. www.bbc.co.uk in 2009 vs. www.bbc.co.uk in 1999 http://web.archive.org/web/19990508033437/www.bbc.co.uk/home/today/ http://www.bbc.co.uk/