“Sifat Tanah dan Pola Curah Hujan pada Perkebunan Kayu Manis (Cinnamomum burmannii) di Mandailing Natal, Sumatera Utara: Soil Properties and Rainfall Regimes in Cinnamon (Cinnamomum burmannii) Plantations in Mandailing Natal, North Sumatra”. PERENNIAL 22, no. 1 (April 30, 2026): 22–29. Diakses Agustus 2, 2026. https://journal-598.unhas.ac.id/index.php/perennial/article/view/49583.