Ord, J. E. (1972). Elementary school social studies for today's children. Harper & Row.
Style de citation Chicago (17e éd.)Ord, John E. Elementary School Social Studies for Today's Children. New York: Harper & Row, 1972.
Style de citation MLA (9e éd.)Ord, John E. Elementary School Social Studies for Today's Children. Harper & Row, 1972.
Attention : ces citations peuvent ne pas être correctes à 100%.