Nieuwenhuis-Mark, R. E. (2011). Healthy Aging as Disease? Frontiers Research Foundation.
استشهاد بنمط شيكاغوNieuwenhuis-Mark, Ruth Elaine. Healthy Aging As Disease? Frontiers Research Foundation, 2011.
MLA استشهادNieuwenhuis-Mark, Ruth Elaine. Healthy Aging As Disease? Frontiers Research Foundation, 2011.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.