Nugroho, Robertus Arifin, and I Gusti Putu Suryadarma. “Pengaruh Servant Leadership Learning Dengan Concept Mapping Terhadap Pemahaman Konsep Dan Berpikir Kritis Siswa”. Jurnal Inovasi Pendidikan IPA 4, no. 1 (April 19, 2018): 114–127. Accessed May 15, 2025. https://jurnal.uny.ac.id/index.php/jipi/article/view/9823.