Gesell, A. (1948). Studies in child development. Greenwood Press.
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Dyfyniad Arddull Chicago
Gesell, Arnold. Studies in Child Development. Westport, Conn.: Greenwood Press, 1948.
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Dyfyniad MLA
Gesell, Arnold. Studies in Child Development. Greenwood Press, 1948.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.