Gilsing, A., Crowe, F., Lloyd-Wright, Z., Sanders, T., Appleby, P., Allen, N., & Key, T. (2010). Serum concentrations of vitamin B12 and folate in British male omnivores, vegetarians and vegans: Results from a cross-sectional analysis of the EPIC-Oxford cohort study.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Gilsing, A., F. Crowe, Z. Lloyd-Wright, T. Sanders, P. Appleby, N. Allen, و T. Key. Serum Concentrations of Vitamin B12 and Folate in British Male Omnivores, Vegetarians and Vegans: Results from a Cross-sectional Analysis of the EPIC-Oxford Cohort Study. 2010.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Gilsing, A., et al. Serum Concentrations of Vitamin B12 and Folate in British Male Omnivores, Vegetarians and Vegans: Results from a Cross-sectional Analysis of the EPIC-Oxford Cohort Study. 2010.