Sahroni Ridoi, Yusniwati, and Dewi Rezki. “The Effect Of Administration Of Cow’s Blood Liquid Fertilizer Dosage On The Growth Of Cocoa (Theobroma Cacao L.) Growth In Ultisol”. Jurnal Riset Perkebunan 3, no. 2 (September 5, 2022): 110–117. Accessed November 22, 2024. http://jrp.faperta.unand.ac.id/index.php/jrp/article/view/53.