Blackall, L. (1990). Communication development in congenitally blind and severely vision impaired children: Principles and strategies. Australia: Royal Victorian Institute for the Blind.
シカゴスタイル引用形Blackall, Loretta. Communication Development in Congenitally Blind and Severely Vision Impaired Children: Principles and Strategies. Australia: Royal Victorian Institute for the Blind, 1990.
MLA引用形式Blackall, Loretta. Communication Development in Congenitally Blind and Severely Vision Impaired Children: Principles and Strategies. Australia: Royal Victorian Institute for the Blind, 1990.
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