Churchill, D., Nair, M., Stanworth, S., & Knight, M. (2019). The change in haemoglobin concentration between the first and third trimesters of pregnancy: A population study. BioMed Central.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Churchill, D., M. Nair, S. Stanworth, و M. Knight. The Change in Haemoglobin Concentration Between the First and Third Trimesters of Pregnancy: A Population Study. BioMed Central, 2019.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Churchill, D., et al. The Change in Haemoglobin Concentration Between the First and Third Trimesters of Pregnancy: A Population Study. BioMed Central, 2019.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.