Não informado. (1989). Educational Technology Research and Development. Association for Educational Communications and Technology.
Chicagoスタイル(17版)引用形式Não informado. Educational Technology Research and Development. Washington: Association for Educational Communications and Technology, 1989.
MLA(8版)引用形式Não informado. Educational Technology Research and Development. Association for Educational Communications and Technology, 1989.
警告: この引用は必ずしも正確ではありません.
