Flavell, J. H. (1977). Cognitive development. Prentice-Hall.
Cita Chicago Style (17a ed.)Flavell, John H. Cognitive Development. Englewood Cliffs, N.J.: Prentice-Hall, 1977.
Cita MLA (8a ed.)Flavell, John H. Cognitive Development. Prentice-Hall, 1977.
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