SIRAPPA, M. P.; TITAHENA, M. L. J. Improvement of Suboptimal Land Productivity Approach by Land and Plant Management. JOURNAL OF TROPICAL SOILS, [S. l.], v. 19, n. 2, p. 99–109, 2015. DOI: 10.5400/jts.2014.v19i2.99-109. Disponível em: https://journal.unila.ac.id/index.php/tropicalsoil/article/view/207. Acesso em: 7 oct. 2025.