McKay, K., & McKay, R. (2011). Learn to swim: Step-by-step water confidence and safety skills for babies and young children. DK Pub.
シカゴスタイル引用形McKay, Kathy, , Rob McKay. Learn to Swim: Step-by-step Water Confidence and Safety Skills for Babies and Young Children. DK Pub, 2011.
MLA引用形式McKay, Kathy, , Rob McKay. Learn to Swim: Step-by-step Water Confidence and Safety Skills for Babies and Young Children. DK Pub, 2011.
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