CITRANING SAYEKTI, DINDA, and WARIH HANDAYANINGRUM. “PEMBELAJARAN PIANO BEGINNER GRADE 1-2 PROGRAM PRIVATE CLASS DI SEKOLAH MUSIK INDONESIA CABANG RUNGKUT SURABAYA”. Jurnal Pendidikan Sendratasik, vol. 6, no. 1, Dec. 2018, doi:10.26740/jps.v6n1.p%p.