National Society for the Study of Education. (1934). The activity movement. Public School Publsihing Co.
芝加哥风格引文National Society for the Study of Education. The Activity Movement. Bloomingto, Illinois: Public School Publsihing Co, 1934.
MLA引文National Society for the Study of Education. The Activity Movement. Public School Publsihing Co, 1934.
警告：这些引文格式不一定是100％准确.