Origine: Gestalt Psychology. 1930, p. 150
Wolfgang Köhler: Frasi in inglese
Origine: Dynamics in Psychology, 1940, p. 116
Origine: Gestalt Psychology. 1930, p. 143; About group formation
Origine: Gestalt Psychology. 1930, p. 32
Origine: Gestalt Psychology. 1930, p. 137
Origine: Gestalt Psychology. 1930, p. 30
Origine: The Mentality of Apes, 1925, p. 94; As cited in: Arthur Koestler, The Act of Creation, 1964, p. 103
Origine: The Mentality of Apes, 1925, p. 94; As cited in: Arthur Koestler, The Act of Creation, 1964, p. 103
Origine: Dynamics in Psychology, 1940, p. 135
Origine: Dynamics in Psychology, 1940, p. 55