Irawan, Arif Irawan, Illa Anggraeni Anggraeni, 和 Margaretta Christita Margaretta. 《Identification Causes Leaf Spot Disease in Cempaka (Magnolia elegans (Blume.) H.Keng) Seedling and Its Control Techniques》. Jurnal Wasian 2, no. 2 (十二月 30, 2015): 87–94. 见于 七月 16, 2026. https://pub.kehutanan.unismuh.ac.id/index.php/wasian/article/view/40.