2. The interpretation of dreams Freud, Sigmund, 1856-1939 New York, NY : Barnes & Noble Classics, c2005. COUN410
3. The Integration of the personality Jung, C. G. (Carl Gustav), 1875-1961. London : Routledge and Kegan Paul, 1940. CP504
4. Play, dreams, and imitation in childhood Piaget, Jean, 1896-1980, Abingdon, Oxon ; Routledge, Taylor & Francis Group, 2013. SW322 SW527
