Kosinwattana, S., Anuwong, C., Chatchana, T., Boonauan, P., and Teamkao, P. “The effect of different planting materials ratios on the growth of foliage plants”. International Journal of Agricultural Technology, vol. 17, no. 6, Nov. 2021, pp. 2127-42, https://li04.tci-thaijo.org/index.php/IJAT/article/view/6340.