HIDAYATI, Beti Malia Rahma; ROHMAH , Oktari. Token Economy as the Intervention of Self-Injurious Behavior in Students with Mental Retardation. Journal An-Nafs: Kajian Penelitian Psikologi, [S. l.], v. 7, n. 2, p. 171–183, 2022. DOI: 10.33367/psi.v7i2.2410. Disponível em: https://ejournal.uit-lirboyo.ac.id/index.php/psikologi/article/view/2410. Acesso em: 14 jan. 2026.