World Health Organization. Study Group on the Psychobiological Development of the Child. (1953). Discussions on child development: A consideration of the biological, psychological, and cultural approaches to the understanding of human development and behaviour. International Universities Press.
Chicago-viite (17. p.)World Health Organization. Study Group on the Psychobiological Development of the Child. Discussions on Child Development: A Consideration of the Biological, Psychological, and Cultural Approaches to the Understanding of Human Development and Behaviour. New York: International Universities Press, 1953.
MLA-viite (9. p.)World Health Organization. Study Group on the Psychobiological Development of the Child. Discussions on Child Development: A Consideration of the Biological, Psychological, and Cultural Approaches to the Understanding of Human Development and Behaviour. International Universities Press, 1953.