APA (7th ed.) Citation

Tredgold, A. F., Tredgold, R. F., & Soddy, K. (1963). Textbook of mental deficiency: (subnormality). Bailliere.

Chicago Style (17th ed.) Citation

Tredgold, Alfred Frank, Roger Francis Tredgold, and Kenneth Soddy. Textbook of Mental Deficiency: (subnormality). Lond.: Bailliere, 1963.

MLA (8th ed.) Citation

Tredgold, Alfred Frank, et al. Textbook of Mental Deficiency: (subnormality). Bailliere, 1963.