Gultom, Dahlia, and Syarifuddin Syarifuddin. “THE COMPLETENESS, BREADTH AND DEPTH : A COMPARISON BETWEEN INDONESIAN AND CAMBRIDGE HIGH SCHOOL BIOLOGY TEXTBOOKS FOR CIRCULATORY SYSTEM”. Jurnal Pelita Pendidikan 4, no. 3 (September 1, 2016). Accessed February 15, 2026. https://jurnal.unimed.ac.id/2012/index.php/pelita/article/view/6625.