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