National Society for the Study of Education. Committee on Mathematics Education & Begle, Edward G. (1970). Mathematics education. NSSE.
Chicago-referens (17:e uppl.)National Society for the Study of Education. Committee on Mathematics Education och Edward G. Begle. Mathematics Education. Chicago: NSSE, 1970.
MLA-referens (9:e uppl.)National Society for the Study of Education. Committee on Mathematics Education och Edward G. Begle. Mathematics Education. NSSE, 1970.
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