Não informado. (1973). Illinois school research and development. Illinois Association for Supervision and Curriculum Development.
Chicagoスタイル(17版)引用形式Não informado. Illinois School Research and Development. Nottingham, Inglaterra: Illinois Association for Supervision and Curriculum Development, 1973.
MLA(8版)引用形式Não informado. Illinois School Research and Development. Illinois Association for Supervision and Curriculum Development, 1973.
警告: この引用は必ずしも正確ではありません.