Raven, J., Handy, R., Hannon, B., and Henry, E. (1972). The ESRI Survey of the Attitudes of Post-Primary Teachers and Pupils — Volume III, Memorandum Series 89, Dublin: ESRI, https://www.esri.ie/publications/the-esri-survey-of-the-attitudes-of-post-primary-teachers-and-pupils-volume-iii-0