Purba, Rahmadani. “Analysis of Laboratory Management Effectiveness in Biology Learning for Class X1 at SMA Negeri 2 Plus Panyabungan”. IJESPG (International Journal of Engineering, Economic, Social Politic and Government) 1, no. 3 (July 30, 2023): 42–49. Accessed October 28, 2025. https://ijespgjournal.org/index.php/ijespg/article/view/34.