SIREGAR, J. EXAMINING OF SEVERAL HIDROPONICS NUTRIENTS FOR LETTUCE ON MODIFIED FLOATING SYSTEM HIDROPONIC TECHNOLOGY. Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering), [S. l.], v. 4, n. 1, 2015. Disponível em: https://jurnal.fp.unila.ac.id/index.php/JTP/article/view/775. Acesso em: 18 oct. 2025.