Nurazizah, Eliza, Fen Tih, and Winny Suwindere. “Black Chocolate Consumption Reduces Subjective Symptoms in 18-22 Years Old Females With Premenstrual Syndrome”. Journal of Medicine and Health 1, no. 1 (February 27, 2015). Accessed November 16, 2024. http://114.7.153.31/index.php/jmh/article/view/502.