FEBRICHA, N. L. Analisis turunnya pendapatan petani penyadap getah Pinus di Jorong Talago Gunuang. AL-ITTIFAQ Jurnal Ekonomi Syariah, [S. l.], v. 2, n. 1, p. 31–42, 2023. DOI: 10.31958/al-ittifaq.v2i1.6601. Disponível em: https://ejournal.uinmybatusangkar.ac.id/ojs/index.php/al-intifaq/article/view/6601. Acesso em: 20 jan. 2026.