Deveci, M., and E. Uzun. “Determination of Phenolic Compounds and Chlorophyll Content of Spinach (Spinacia Oleracea L.) at Different Growth Stages”. Asian Journal of Chemistry 23, no. 8 (May 7, 2011): 3739–3743. Accessed July 23, 2024. https://asianpubs.org/index.php/ajchem/article/view/10681.