F. D. . Dewanti, Y. . Koetjoro, and D. U. . Pribadi, “Mexican Sunflower (Tithonia diversifolia) as a Source of Organic Matter in Potato Cultivation ”, Nusantara Sci. Tech. Proc., pp. 114–118, Dec. 2020, doi: 10.11594/nstp.2020.0613.