Hariyadi, T., K. Keryanti, R. Asih, and Z. Ahmad. “The Effect of Cabbage Waste Concentration and Fermentation Time on The Decaffeination of Arabica Coffee”. International Journal Applied Technology Research, Vol. 5, no. 2, June 2024, pp. 132-41, doi:10.35313/ijatr.v5i2.129.