^Funk and Wagnalls: "To instruct in doctrines; esp., to teach partisan or sectarian dogmas"; I.A. Snook, ed. 1972. Concepts of Indoctrination (London: Routledge and Kegan Paul).
^Wilson, J., 1964. "Education and indoctrination", in T.H.B. Hollins, ed. Aims in Education: the philosophic approach (Manchester University Press).