Anandakumar, S. ., S. Ranjith, D. Senthamilselvi, G. Rajadurai, and K. Sivakumar. “Foliar Application of Humic Acid on Growth and Biomass Improvement of Bok Choy and Red Leaf Lettuce”. Plant Science Today, vol. 11, no. 2, Mar. 2024, doi:10.14719/pst.2435.