Dwandaru, Wipsar Sunu Brams, et al. “Optical Properties Comparison of Carbon Nanodots Synthesized from Kangkung (Ipomoea Aquatica) With Deep Frying and Roasting Techniques”. Jurnal Penelitian Fisika Dan Aplikasinya (JPFA), vol. 9, no. 2, Dec. 2019, pp. 123-31, doi:10.26740/jpfa.v9n2.p123-131.