Turner, J. S., & Helms, D. B. (1983). Lifespan development (2nd ed.). New York: Holt, Rinehart, and Winston.
शिकागो स्टाइल उद्धरणTurner, Jeffrey S., और Donald B. Helms. Lifespan Development. 2nd ed. New York: Holt, Rinehart, and Winston, 1983.
एमएलए उद्धरणTurner, Jeffrey S., और Donald B. Helms. Lifespan Development. 2nd ed. New York: Holt, Rinehart, and Winston, 1983.
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