Não informado. (1970). American secondary education. Ohio Association of Secondary School Administrators.
Style de citation Chicago (17e éd.)Não informado. American Secondary Education. Akron, Ohio: Ohio Association of Secondary School Administrators, 1970.
Style de citation MLA (8e éd.)Não informado. American Secondary Education. Ohio Association of Secondary School Administrators, 1970.
Attention : ces citations peuvent ne pas être correctes à 100%.