Asnan Hamid Harahap, and Adhona Bhajana Wijaya Negara. “PENGARUH PEMBERIAN PUPUK ECO ENZYME TERHADAP PERTUMBUHAN RUMPUT GAJAH (Pennisetum Purpureum)”. Journal of Innovation Research and Knowledge, vol. 5, no. 1, June 2025, pp. 591-8, https://mail.bajangjournal.com/index.php/JIRK/article/view/10358.