APA (7th ed.) Citation

Turner, J. S., & Helms, D. B. (1979). Life span development. Saunders.

Chicago Style (17th ed.) Citation

Turner, Jeffrey S., and Donald B. Helms. Life Span Development. Philadelphia, Pa: Saunders, 1979.

MLA (9th ed.) Citation

Turner, Jeffrey S., and Donald B. Helms. Life Span Development. Saunders, 1979.