D. Safitri, K. I. Safitri, A. D. A. Syaifullah, R. A. Rohman, and M. Rizqi, “The Use of Gondok Cigarette Into Brickets as Fuel Products in Replacement of Alternative Energy Sources at Soko Glagah District”, Kontribusia, vol. 1, no. 2, pp. 20–24, Oct. 2018.