http://www.ziddu.com/download/12371396/Modul4.ppt.htmlhttp://www.ziddu.com/download/12229480/lampiran_25_10_2010.zip.html
http://www.indowebster.com/peta_sumsel.html
http://www.indowebster.com/Bahan_seminar_ETPRO.html
http://www.enterupload.com/4npxwy0gdsty/BAHAN_KULIAH_PERBAKOM.zip.html
http://www.ziddu.com/download/11899772/Perbakom.rar.html