B. Siahaan, Friska, Universitas HKBP Nommensen, Indonesia

• COVIT (Community Service of Tambusai) Vol. 2 No. 1 (2022): MARET 2022 - Articles
  KURSUS BIMBINGAN BELAJAR GRATIS SISWA UPT SPF SD NEGERI 104212 MARINDAL II
  Abstract  pdf