Asriel Rivaldy Lumbantobing, Rowilson Nadeak, Roy Josep M Hutagalung, Testi Bazarni Zebua, and Diana Martiani Situmeang. “TEKNIK PERMAINAN TONGUING SAXOPHONE ALTO PADA LAGU ‘DAO DUMENGGAN’ BE HKBP NO.557 DI HKBP PEARAJA TARUTUNG”. Jurnal Pendidikan Sosial Dan Humaniora, vol. 3, no. 4, Oct. 2024, pp. 4739-57, https://publisherqu.com/index.php/pediaqu/article/view/1387.