Amano, K., N. Mitsukawa, T. Harada, S. Aizawa, and K. Shimada. “Study of Human Wharton’s Duct Structure and Its Relationship With Salivary Flow”. Italian Journal of Anatomy and Embryology, vol. 122, no. 3, Apr. 2018, pp. 185-91, https://oajournals.fupress.net/index.php/ijae/article/view/1605.