FENOMENA LONJAKAN BELANJA BARANG DAN JASA DI AKHIR TAHUN: Perspektif Gone Theory. [s.l.] : Library Buku Penerbit KBM,2025. Disponível em: https://librarypenerbitkbm.science/index.php/buku/catalog/book/668. Acesso em: 1 oct. 2026.