Illingworth, R. S. (1969). Sucking and swallowing difficulties in infancy: Diagnostic problem of dysphagia.
シカゴスタイル引用形Illingworth, R. S. Sucking and Swallowing Difficulties in Infancy: Diagnostic Problem of Dysphagia. 1969.
MLA引用形式Illingworth, R. S. Sucking and Swallowing Difficulties in Infancy: Diagnostic Problem of Dysphagia. 1969.
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