Ayanga, K., B. Kwach, T. Maritim, and P. O. Owuor. “Long Term Influence of High Rates of Nitrogenous Fertilizer on Seedling Tea: 1. Effects Young and Mature Leaf Nutrients Contents”. International Journal of Tea Science, Vol. 19, no. 01, Oct. 2025, pp. 5-10, doi:10.20425/ijts19102.