Verbrugge, L., Chan, A., & SOCIOLOGY. (2011). Giving help in return: Family reciprocity by older Singaporeans.
استشهاد بنمط شيكاغوVerbrugge, L.M., A. Chan, و SOCIOLOGY. Giving Help in Return: Family Reciprocity By Older Singaporeans. 2011.
MLA استشهادVerbrugge, L.M., A. Chan, و SOCIOLOGY. Giving Help in Return: Family Reciprocity By Older Singaporeans. 2011.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.