A. Al-Samah and R. Al-Ubaidy, “THE EFFECT OF BIOFERTILIZATION, ORGANIC NUTRIENT SPRAYING AND GLUTAMIC ACID ON SOME LETTUCE TRAITS ”, Iraqi J. Agric. Sci., vol. 57, no. 6, pp. 1783–1796, Jun. 2026, doi: 10.36103/2xrwk829.