Hartup, W. W. (1967). The young child. Reviews of research. National Association for the Education of Young Children.
芝加哥风格引文Hartup, Willard W. The Young Child. Reviews of Research. Washington: National Association for the Education of Young Children, 1967.
MLA引文Hartup, Willard W. The Young Child. Reviews of Research. National Association for the Education of Young Children, 1967.
警告：这些引文格式不一定是100％准确.