L. Lenni, H. Suhardiyanto, K. B. . Seminar, and R. P. . A. . Setiawan, “Photosynthetic Rate of Lettuce Cultivated on Floating Raft Hydroponic with Controlled Nutrient Solution”, HAYATI J Biosci, vol. 27, no. 1, p. 31, Jan. 2020, doi: 10.4308/hjb.27.1.31.