SIBURIAN, E. .; SIREGAR, L. A. Various Natural Ingredients as Plant Growth Regulator to Increasing Viability True Seed Shallot of Onion. Jurnal Online Pertanian Tropik, [S. l.], v. 6, n. 1, p. 80–87, 2019. DOI: 10.32734/jopt.v6i1.3043. Disponível em: https://idjpcr.usu.ac.id/jpt/article/view/3043. Acesso em: 4 aug. 2025.