SMK dan Batu Akik

http://www.tribunnews.com/regional/2015/02/14/stm-di-purbalingga-ini-ada-pelajaran-membuat-cincin-batu-akik

http://internasional.metrotvnews.com/read/2015/02/10/356042/temui-jokowi-filipina-sepakat-beli-pesawat-n212i