Sihotang, Y. P., I. Indriyani, and D. Fortuna. “The Effect of Light Emitting Diode (LED) White and Blue Spectrum on The Characteristics of Lettuce Grown in The Deep Flow Hydroponic: Deep Flow Hydroponic of Lactuca”. Jurnal Bio-Geo Material Dan Energi, vol. 3, no. 2, Sept. 2023, pp. 81-90, doi:10.22437/bigme.v3i2.30776.