Kurniawan, P. W. . (2018) “PENGARUH POSITIVE REINFORCEMENT TERHADAP HASIL BELAJAR SEJARAH SISWA DI SMA ADIGUNA BANDAR LAMPUNG”, Lentera: Jurnal Ilmiah Kependidikan, 11(1), pp. 71–80. Available at: https://jurnal.stkippgribl.ac.id/index.php/lentera/article/view/375 (Accessed: 3 July 2024).