Sys NS on Wikipedia
External resources
- http://arsip.gatra.com/2006-12-18/versi_cetak.php?id=100324
- http://filmindonesia.or.id/movie/name/nmp4c4e511103efa_raden-mas-haryo-heroe-syswanto-ns.-soerio-soebagio/filmography
- http://majalah.tempointeraktif.com/id/arsip/1990/12/01/HB/mbm.19901201.HB17459.id.html
- http://majalah.tempointeraktif.com/id/arsip/2011/02/21/PT/mbm.20110221.PT135984.id.html
- http://majalah.tempointeraktif.com/id/arsip/2011/03/28/IMZ/mbm.20110328.IMZ136280.id.html
- http://www.jakarta.go.id/jakv1/encyclopedia/detail/3072
- http://www.thejakartapost.com/news/2002/01/06/religious-awakenings-stars039-spiritual-turning-points.html
- http://www.thejakartapost.com/news/2003/01/03/remembering-a-film-legend-ratno-timoer.html
- http://www.thejakartapost.com/news/2008/11/29/sys-ns-blames-govt-high-ticket-prices.html
- http://www.thejakartapost.com/news/2009/04/13/election-defeat-a-bitter-pill-swallow.html