Haryadi, Haryadi, Sunarto Sunarto, and Sugiyarto Sugiyarto. “Vegetation Analysis of the Secondary Forest Area of ​​Mount Merapi National Park”. Jurnal Biodjati 4, no. 1 (May 28, 2019): 50–57. Accessed April 4, 2025. http://journal.uinsgd.ac.id/index.php/biodjati/article/view/4239.