Andri, A., E. Adelina, and A. Adrianton. “Pemberian Zat Pengatur Tumbuh Sitokinin Terhadap Vigor Bibit Kakao (Theobroma Cacao L.)”. AGROTEKBIS : JURNAL ILMU PERTANIAN (e-Journal), Vol. 7, no. 3, June 2019, pp. 299 -05, http://103.245.72.23/index.php/agrotekbis/article/view/429.