Não informado. (1969). Ontario education. Ontario Public School Trustees Association.
Cita Chicago Style (17a ed.)Não informado. Ontario Education. Toronto, Canada: Ontario Public School Trustees Association, 1969.
Cita MLA (8a ed.)Não informado. Ontario Education. Ontario Public School Trustees Association, 1969.
Precaución: Estas citas no son 100% exactas.