APA
International association for the science study of mental deficiency (N.D), International association for the science study of mental deficiency (N.D), . (1986). Proceedings. London: methuen.
Chicago
International association for the science study of mental deficiency (N.D), International association for the science study of mental deficiency (N.D), . 1986. Proceedings. London: methuen.
Harvard
International association for the science study of mental deficiency (N.D), International association for the science study of mental deficiency (N.D), . (1986). Proceedings. London: methuen.
MLA
International association for the science study of mental deficiency (N.D), International association for the science study of mental deficiency (N.D), . Proceedings. London: methuen. 1986.