Turner, J. S., & Helms, D. B. (1995). Lifespan development (5th ed.). Harcourt Brace College Publishers.
Chicago Style (17th ed.) CitationTurner, Jeffrey S., and Donald B. Helms. Lifespan Development. 5th ed. Fort Worth: Harcourt Brace College Publishers, 1995.
MLA (9th ed.) CitationTurner, Jeffrey S., and Donald B. Helms. Lifespan Development. 5th ed. Harcourt Brace College Publishers, 1995.
Warning: These citations may not always be 100% accurate.