Arief, Rudi Kurniawan, Muhamad Ramadhan Kasman, Armila Armila, and Irfan Hilmy. 2022. “Development of Virgin Coconut Oil Fermented Tank Using Teak Wood Powder Insulator”. Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) 11 (4):617-24. https://doi.org/10.23960/jtep-l.v11i4.617-624.