APA (7th ed.) Citation

National Society for the Study of Education. Committee on Mathematics Education & Begle, Edward G. (1970). Mathematics education: The sixty-ninth yearbook of the National Society for the Study of Education, part I. NSSE.

Chicago Style (17th ed.) Citation

National Society for the Study of Education. Committee on Mathematics Education and Edward G. Begle. Mathematics Education: The Sixty-ninth Yearbook of the National Society for the Study of Education, Part I. Chicago: NSSE, 1970.

MLA (9th ed.) Citation

National Society for the Study of Education. Committee on Mathematics Education and Edward G. Begle. Mathematics Education: The Sixty-ninth Yearbook of the National Society for the Study of Education, Part I. NSSE, 1970.