Minnesota Symposium on Child Psychology & Hill, J. P. (1969). Minnesota Symposia on Child Psychology. University of Minnesota Press.
Cita Chicago Style (17a ed.)Minnesota Symposium on Child Psychology y John P. Hill. Minnesota Symposia on Child Psychology. Minneapolis: University of Minnesota Press, 1969.
Cita MLA (9a ed.)Minnesota Symposium on Child Psychology y John P. Hill. Minnesota Symposia on Child Psychology. University of Minnesota Press, 1969.
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