Roynaldi, R., and Meriksa Sembiring. “THE RESPONSE OF SEVERAL TYPES OF LIQUID ORGANIC FERTILIZER (POC) TO GRASS GROWTH ODOT (Pennisetum Purpureum CV. Mott)”. Journal of Innovation Research and Knowledge, vol. 3, no. 10, Mar. 2024, pp. 2175-80, https://bajangjournal.com/index.php/JIRK/article/view/7585.