Elisabeth Jaida, et al. “DERAJAD INFESTASI PENYAKIT KARAT DAUN PADA TANAMAN (Hemileia Vastatrix) KOPI ARABIKA (Coffea Arabica L.) : Leaf Rust Degree Of Infestation Level (Hemileia Vastatrix) In Arabica Coffee Plants (Coffea Arabica L.) ”. SAINSTEK, vol. 7, no. 1, Jan. 2026, pp. 131-5, https://conference.undana.ac.id/sainstek/article/view/915.