Baldwin, Handbook of Psychology, 2 vols. (New York: Holt. London: Macmillans. Abridged in Elements of Psychology).
----, Articles in Appletons' Universal Cyclopædia (New York: Appletons).
Psychology of the Child.
Preyer, The Mind of the Child, 2 vols. (New York: Appletons).
Compayré, Intellectual and Moral Development of the Child, 2 vols. (New York: Appletons).
Sully, Studies of Childhood (New York: Appletons. London: Longmans).
Baldwin, Mental Development in the Child and the Race (New York and London: Macmillans).
Physiological Psychology.
Ziehen, Introduction to Physiological Psychology (London: Sonnenschein. New York: Macmillans).