R. Sitinjak, K. E. Tarigan, and A. S. P. Sari, “IMPROVING STUDENTS’ READING COMPREHENSION BY USING INQUIRY CHART STRATEGY TO THE NINTH GRADE STUDENTS OF SMP SWASTA KATOLIK BUDI MURNI 2 MEDAN”, KAIROS, vol. 3, no. 3, pp. 158–190, Jul. 2020.