Chu, Teh-ling, and J. L. Serapión. “Effect of Leaf Shading on Flowering Processes of Sugarcane”. The Journal of Agriculture of the University of Puerto Rico 59, no. 3 (July 1, 1975): 208–214. Accessed April 19, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/10608.