Villar, A. S. (2008). Coping with down's syndrome. Smart Parenting.
Chicago Style (17th ed.) CitationVillar, Anna Santos. "Coping with Down's Syndrome." Smart Parenting 2008.
MLA引文Villar, Anna Santos. "Coping with Down's Syndrome." Smart Parenting, 2008.
警告:這些引文格式不一定是100%准確.