Morgan, V., Mullin, B., Dunn, S., & Equal Opportunities Commission for Northern Ireland. (1986). Gender differentiation in infant classes: A research report commissioned by the Equal Opportunities Commission for Northern Ireland. University of Ulster, Faculty of Education.

Morgan, Valerie, et al. Gender Differentiation in Infant Classes: A Research Report Commissioned by the Equal Opportunities Commission for Northern Ireland. University of Ulster, Faculty of Education, 1986.