Doll, R., & Peto, R. (1998). There is no such thing as ageing - Ageing has been defined as to grow or make old - Reply.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Doll, R., و R. Peto. There Is No Such Thing as Ageing - Ageing Has Been Defined as to Grow or Make Old - Reply. 1998.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Doll, R., و R. Peto. There Is No Such Thing as Ageing - Ageing Has Been Defined as to Grow or Make Old - Reply. 1998.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.