Lane, Gerry. “The Effects of GABA, L-Theanine, Passiflora Incarnata and Prunus Cerasus in Reducing the Symptoms of Nervousness in Individuals With Anxiety and/Or Depression”. Journal of Nutritional Therapeutics 3, no. 4 (December 22, 2014): 175–177. Accessed February 6, 2025. http://lifescienceglobalca.com/index.php/jnt/article/view/2621.