Ramadhani, Winih Sekaringtyas, et al. “VEGETATION CHANGES ANALYSIS USING NDVI (NORMALIZED DIFFERENCE VEGETATION INDEX) METHOD IN KALIANDA SUBDISTRICT, LAMPUNG SELATAN DISTRICT, INDONESIA”. Jurnal Pertahanan: Media Informasi Tentang Kajian Dan Strategi Pertahanan Yang Mengedepankan Identity, Nasionalism Dan Integrity, vol. 7, no. 3, Dec. 2021, pp. 501-10, doi:10.33172/jp.v7i3.1223.