TAMOD, Z. E.; KUMOLONTANG, W.; KAUNANG, D. Diagnosing Soil and Coconut Root Existence in Lontang Plantation of Manado City. JOURNAL OF TROPICAL SOILS, [S. l.], v. 21, n. 2, p. 99–108, 2017. DOI: 10.5400/jts.2016.v21i2.99-108. Disponível em: https://journal.unila.ac.id/index.php/tropicalsoil/article/view/246. Acesso em: 27 jul. 2025.