Oktaviani, L., M. Marlin, and P. Prasetyo. “Application of Nitrogen Fertilizer and Biofertilizer to Enhance the Growth and Yield of Shallots”. International Seminar on Plant Protection, vol. 1, no. 1, June 2025, pp. 107-16, https://semnas.bpfp-unib.com/index.php/seminter/article/view/350.