B. W. Lestari, I. P. Silawibawa, and R. . Sutriono, “The The Effect of Application Various Doses of Cow Manure and NPK (16:16:16) on Soil Properties and The Growth of Red Lettuce (Lactuca sativa Var. Acephala)”, JBT, vol. 23, no. 4, Oct. 2023.