Shaffer, D. R. (2001). Developmental psychology: Childhood and adolescence (6th ed.). Wadsworth Thomson Learning.
Citace podle Chicago (17th ed.)Shaffer, David R. Developmental Psychology: Childhood and Adolescence. 6th ed. Australia ; Belmont, CA: Wadsworth Thomson Learning, 2001.
Citace podle MLA (8th ed.)Shaffer, David R. Developmental Psychology: Childhood and Adolescence. 6th ed. Wadsworth Thomson Learning, 2001.
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