APA (7th ed.) Citation

Gesell, A. L., & Amatruda, C. (1945). The embryology of behavior: The beginnings of the human mind. Harper.

Chicago Style (17th ed.) Citation

Gesell, Arnold Lucius, and Catherine Amatruda. The Embryology of Behavior: The Beginnings of the Human Mind. New Yokr: Harper, 1945.

MLA (9th ed.) Citation

Gesell, Arnold Lucius, and Catherine Amatruda. The Embryology of Behavior: The Beginnings of the Human Mind. Harper, 1945.

Warning: These citations may not always be 100% accurate.