Cita APA

Valentine, C. W. 1., & Valentine, C. W. 1. (1970). The Normal child and some of his abnormalities: A general introduction to psychology of childhood. London: Penguin Books.

Citación estilo Chicago

Valentine, Charles Wilfred 1879-1964, y Charles Wilfred 1879-1964 Valentine. The Normal Child and Some of His Abnormalities: A General Introduction to Psychology of Childhood. London: Penguin Books, 1970.

Cita MLA

Valentine, Charles Wilfred 1879-1964, y Charles Wilfred 1879-1964 Valentine. The Normal Child and Some of His Abnormalities: A General Introduction to Psychology of Childhood. London: Penguin Books, 1970.