Reyes-Pérez, Juan José, et al. “Effect of Humic Acids, Mycorrhiza, and Chitosan on Growth Indicators of Two Tomato Cultivars (Solanum Lycopersicum L.)”. REVISTA TERRA LATINOAMERICANA, vol. 38, no. 3, July 2020, pp. 653-66, doi:10.28940/terra.v38i3.671.