Tohutoro APA (7th ed.)
Feldman, R. S. (2003). Development across the life span (3ed.). Prentice Halll.
Tohutoru Kātū Chicago (17th ed.)
Feldman, Robert. S. Development Across the Life Span. 3ed. Upper Saddle River: Prentice Halll, 2003.
Tohutoro MLA (9th ed.)
Feldman, Robert. S. Development Across the Life Span. 3ed. Prentice Halll, 2003.
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