Djudin, T. and Grapragasem, S. (2019) “The Use of Pictorial Analogy to Increase Students Achievement and Its Retention of Physics Lessons of Direct Current”, Jurnal Penelitian Fisika dan Aplikasinya (JPFA), 9(2), pp. 140–151. doi: 10.26740/jpfa.v9n2.p140-151.