Penguin Books Ltd., 1976 Great Britain. Pelican Book. Psychology and Psychiatry. 8º (18×11,5 cm) 288 págs. Rústica ilustrada. Cubierta deslucida. Tostado de las páginas. Signos de uso. Nombre del anterior propietario. «This is an admirable book, wich deserves to be widely read, not only by those who are professionally concerned with disturbed and un happy children, but by that very large number of parents who are worried from time to time about their children’s behaviour and who are uncertain about when to seek expert advice…»