Não informado. (1969). Ontario education. Ontario Public School Trustees Association.
Chicagoスタイル(17版)引用形式Não informado. Ontario Education. Toronto, Canada: Ontario Public School Trustees Association, 1969.
MLA(8版)引用形式Não informado. Ontario Education. Ontario Public School Trustees Association, 1969.
警告: この引用は必ずしも正確ではありません.