APA (7th ed.) Citation

Gesell, A., Thompson, H., & Amatruda, C. S. (1969). Infant behavior, its genesis and growth. Greenwood Press.

Chicago Style (17th ed.) Citation

Gesell, Arnold, Helen Thompson, and Catherine Strunk Amatruda. Infant Behavior, Its Genesis and Growth. New York: Greenwood Press, 1969.

MLA (9th ed.) Citation

Gesell, Arnold, et al. Infant Behavior, Its Genesis and Growth. Greenwood Press, 1969.