Siebert, A., Obeid, R., Weder, S., Awwad, H. M., Sputtek, A., Geisel, J., & Keller, M. (2017). Vitamin B-12–fortified toothpaste improves vitamin status in vegans: A 12-wk randomized placebo-controlled study. The American journal of clinical nutrition, 105(3), 618-625. https://doi.org/10.3945/ajcn.116.141978
Chicago Style (17th ed.) CitationSiebert, Anne-Kathrin, Rima Obeid, Stine Weder, Hussain M. Awwad, Andreas Sputtek, Juergen Geisel, and Markus Keller. "Vitamin B-12–fortified Toothpaste Improves Vitamin Status in Vegans: A 12-wk Randomized Placebo-controlled Study." The American Journal of Clinical Nutrition 105, no. 3 (2017): 618-625. https://doi.org/10.3945/ajcn.116.141978.
MLA (9th ed.) CitationSiebert, Anne-Kathrin, et al. "Vitamin B-12–fortified Toothpaste Improves Vitamin Status in Vegans: A 12-wk Randomized Placebo-controlled Study." The American Journal of Clinical Nutrition, vol. 105, no. 3, 2017, pp. 618-625, https://doi.org/10.3945/ajcn.116.141978.