Hutabarat, R. S., E. Turmudi, and N. Setyowati. “Effect of Tithonia Compost (Tithonia Diversifolia) and Phosphorus On The Growth and Yield of Peanuts”. Akta Agrosia, vol. 22, no. 2, Dec. 2019, pp. 70-76, https://ejournal.unib.ac.id/Agrosia/article/view/7416.