Sumber : http://www.technos-computer.co.cc/2010_05_01_archive.html
http://www.docstoc.com/docs/22044083/Sumber-Daya-Informasi
http://ikc.unimal.ac.id/umum/ibam/ibam-os-html/x7013.html
http://expolusion.blogspot.com/2010/02/masalah-yang-terkait-dengan-sistem.html
http://naili-almuna.blogspot.com/2008/05/media-penyimpanan.html
http://bebas.vlsm.org/v06/Kuliah/SistemOperasi/2004/51/produk/SistemOperasi/c76.html