Arja, Awliya Rahmi, and . Supijatno. 2018. “Penyadapan Tanaman Karet (Hevea Brasiliensis Mull-Arg.) Di Perkebunan Karet Gurach Batu Estate, Asahan, Sumatera Utara”. Buletin Agrohorti 6 (1): 1-9. https://doi.org/10.29244/agrob.v6i1.16817.