National Society for the Study of Education. Committee on Mathematics Education & Begle, Edward G. (1970). Mathematics education. NSSE.
Cita Chicago (17th ed.)National Society for the Study of Education. Committee on Mathematics Education i Edward G. Begle. Mathematics Education. Chicago: NSSE, 1970.
Cita MLA (9th ed.)National Society for the Study of Education. Committee on Mathematics Education i Edward G. Begle. Mathematics Education. NSSE, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.