Shi, Xueping, Fang Yu, Caiyun Jiang, Hongtao Wang, and Yukui Rui. “COMPARISON OF NUTRIENT COMPONENTS OF CHINESE LETTUCE AND AMERICAN LETTUCE”. Emirates Journal of Food and Agriculture 27, no. 10 (September 11, 2015): 790–792. Accessed September 19, 2025. https://ejfa.me/index.php/journal/article/view/921.