Alexander, Alex G. “Effects of Amylase and Invertase Regulators Upon Sugar Content, Protein Content, and Enzyme Activity of Immature Sugarcane”. The Journal of Agriculture of the University of Puerto Rico 50, no. 1 (January 1, 1966): 18–35. Accessed March 29, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/3439.