L. M. H. Kilowasid, M. F. Sanjaya, T. C. Rakian, S. Alam, M. K. Djafar, and M. Muliddin, “Vermicast of Earthworm as Ecosystem Engineers within Different Vermireactor Shape”, j Trop. Soils, vol. 25, no. 2, pp. 83–92, May 2020.