Kumar, Pardeep, N. K. Pathania, Parveen Sharma, and Nageswer Singh. “Evaluation of Lettuce Genotypes for Yield and Quality under Protected Conditions of Northwestern Himalayas”. Himachal Journal of Agricultural Research 41, no. 2 (February 10, 2015): 184–188. Accessed August 21, 2025. https://www.hjar.org/index.php/hjar/article/view/110367.