Não informado. (1989). Education Today. Ontario Public School Board's Association.
Citação do estilo Chicago (17ª ed.)Não informado. Education Today. Toronto, Canada: Ontario Public School Board's Association, 1989.
Citação MLA (8ª ed.)Não informado. Education Today. Ontario Public School Board's Association, 1989.
警告：這些引文格式不一定是100％准確.