Kaloko EL, Simatupang Z. PERCEPTION AND KNOWLEDGE LEVEL OF STUDENTS ABOUT BIODIVERSITY AND GLOBAL WARMING IN SMA TIGALINGGA DISTRICTS. Jurnal Pelita Pendidikan [Internet]. 1 September 2016 [dikutip 2 Juli 2025];4(3). Tersedia pada: https://jurnal.unimed.ac.id/2012/index.php/pelita/article/view/5269