https://wisatabudayaku.sv.ugm.ac.id/2020/01/25/masjid-kagungan-dalem-keraton-saka-tunggal-yogyakarta/
https://profilbaru.com/R._Ng_Wasiman_Mintoboedojo
The building of the Saka Tunggal mosque was planned entirely by R.Ng. Mintoboedojo
