Weikart, D. P. (2000). Early childhood education: Need and opportunity. Unesco, International Institute for Educational Planning.
芝加哥风格引文Weikart, David P. Early Childhood Education: Need and Opportunity. Paris: Unesco, International Institute for Educational Planning, 2000.
MLA引文Weikart, David P. Early Childhood Education: Need and Opportunity. Unesco, International Institute for Educational Planning, 2000.
警告：这些引文格式不一定是100％准确.