Indrawati, A. C., A. Ihwan, and R. Adriat. “Analysis of Drought in the Sekayam Watershed During a Very Strong El Niño Event (1997)”. Jurnal Ilmiah Sains, vol. 24, no. 2, Oct. 2024, pp. 160-9, doi:10.35799/jis.v24i2.56109.