Helen Parkhurst. “Analisis Karakteristik Kekeringan Di Nusa Tenggara Menggunakan Pengukuran Return Period”. Journal Economic Excellence Ibnu Sina 1, no. 4 (December 20, 2023): 325–335. Accessed November 22, 2024. https://jurnal.stikes-ibnusina.ac.id/index.php/Excellence/article/view/888.