Kusmiah, Nurhaya, 		Waris, Abdul, DAN 		Manggabarani, Ishak.
" Efektifitas Fermentor Fuzzy Digital Terhadap Kualitas Mutu Biji Kopi" <em>Jurnal Ilmiah Teknologi Pertanian Agrotechno</em> [Online], Volume 6 Nomor 2 (31 October 2021)