ERNY RACHMAWATI; SULFAH ANJARWATI; KRIS LINGGARDINI. PENYULUHAN TENTANG KORESPONDENSI: PERBEDAAN SURAT FORMAL DAN NON FORMAL. JURNAL PENGABDIAN MANDIRI, [S. l.], v. 1, n. 7, p. 1271–1274, 2022. DOI: 10.53625/jpm.v1i7.2812. Disponível em: https://www.bajangjournal.com/index.php/JPM/article/view/2812. Acesso em: 28 oct. 2025.