1. Agnew, Donald C., The Effect of Varied Amounts of Phonetic Training mi Primary Reading, Duke University Research Studies in Education, No. 5, Duke University Press, Durham, NC, 1930, pp. viii + 50.
2. Austin, Mary; Morrison, Coleman, The First R: The Harvard Report on Reading in the Elementary Schools, Macmillan, New York, 1963, pp. xi + 269.
3. Austin, Mary C.; and others, The Torch Lighters, Harvard University Press, Cambridge, 1961, p. 196.