PERAMALAN PENDAPATAN RETRIBUSI PERSAMPAHAN PADA TPA REGIONAL SOLOK MENGGUNAKAN METODE HOLT DOUBLE EXPONENTIAL SMOOTHING. JOURNAL OF SCIENCE AND SOCIAL RESEARCH, [S. l.], v. 9, n. 5, p. 7603 – 7608, 2026. DOI: 10.54314/jssr.v9i5.7245. Disponível em: https://jurnal.goretanpena.com/index.php/JSSR/article/view/7245.. Acesso em: 10 oct. 2026.