McCall, S., Nair, M., & Knight, M. (2016). Factors associated with maternal mortality at advanced maternal age: A UK population-based case–control study. Wiley.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)McCall, S., M. Nair, و M. Knight. Factors Associated with Maternal Mortality at Advanced Maternal Age: A UK Population-based Case–control Study. Wiley, 2016.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)McCall, S., et al. Factors Associated with Maternal Mortality at Advanced Maternal Age: A UK Population-based Case–control Study. Wiley, 2016.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.