Riwandi, R., H. Hasanudin, H. Gusmara, and A. Anandyawati. “Soil Quality Engineering Using Vermicompost and Its Effect on the Corn (Zea Mays L.) Production in Coastal Area”. JOURNAL OF TROPICAL SOILS, vol. 25, no. 3, Nov. 2020, pp. 127-35, doi:10.5400/jts.2020.v25i3.127-135.