SAILUN, Betty; EKA PUTRI, Miranti; HANDAYANI, Pera. AN ANALYSIS OF SCHOOL-WIDE TOKEN ECONOMY SYSTEM ON CHALLENGE BEHAVIOR OF MENTAL RETARDATION’ STUDENTS AT SLBN PENBINA PEKANBARU: (Analisis School-Wide Token Economy System pada Tantangan Perilaku Siswa Keterbelakangan Mental ’di SLBN Pembina Pekanbaru). Perspektif Pendidikan dan Keguruan, Pekanbaru, Riau, Indonesia, v. 6, n. 12, p. 25–35, 2017. Disponível em: https://journal.uir.ac.id/index.php/Perspektif/article/view/259. Acesso em: 3 jul. 2024.