National Society for the Study of Education. Committee on Metropolitanism & Havighurst, R. J. (1968). Metropolitanism: Its challenge to education, by the yearbook committee and associated contributors. NSSE; distributed by the University of Chicago Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Society for the Study of Education. Committee on Metropolitanism و Robert James Havighurst. Metropolitanism: Its Challenge to Education, by the Yearbook Committee and Associated Contributors. Chicago: NSSE; distributed by the University of Chicago Press, 1968.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)National Society for the Study of Education. Committee on Metropolitanism و Robert James Havighurst. Metropolitanism: Its Challenge to Education, by the Yearbook Committee and Associated Contributors. NSSE; distributed by the University of Chicago Press, 1968.