R. F. . Ritonga, M. Maesaroh, and E. . Kartikawati, “Analisis Kesesuaian Materi Sistem Pernapasan dan Sistem Percernaan Pada Buku Teks Biologi SMA: (The Suitability Analysis Of Respiratory Sistem and Digestive Sistem Materials in High School Biology Text Books)”, Biodik , vol. 8, no. 2, pp. 47 - 53, Jun. 2022.