6 1 20 Teori dan Praktek Kholid Murtadlo, SE., ME Additional Author mixed material Pasuruan Yudharta Press 2011 Drs. Djoko Pekik Irianto, M.Kes. Additional Author mixed material Yogyakarta Andi 2007 Prof. Dr. H. Sofyan S. Willis Additional Author mixed material Bandung ALFABETA 2009 KKB Kominfo Additional Author mixed material Jakarta Kementrian Komunikasi dan Informatika RI 2011 Teori dan Praktek Caroline Coffin Additional Author Jim Donohue Additional Author Sarah North Additional Author mixed material Pasuruan Yudharta Press 2011 KKB BKKBN Biro Pendidikan Additional Author mixed material Jakarta Kementrian Komunikasi dan Informatika RI 2011