Teberdar, E., S. Çivi, S. Büyükbaş, and S. Kavak. “A Study on the Effects of Smoking Habit of the Youth on Blood Serum and Urine Vitamin C Levels”. Journal of Nutrition and Dietetics, vol. 26, no. 1, June 1997, pp. 11-17, https://beslenmevediyetdergisi.org/index.php/bdd/article/view/539.