"A00200903087". Pangkalan Data Kekayaan Intelektual. Indonesia: Direktorat Jenderal Kekayaan Intelektual Kementerian Hukum & HAM R.I. 19 January 2010. Retrieved 9 July 2022.
"A00200903088". Pangkalan Data Kekayaan Intelektual. Indonesia: Direktorat Jenderal Kekayaan Intelektual Kementerian Hukum & HAM R.I. 19 January 2010. Retrieved 9 July 2022.