Ord, J. E. (1972). Elementary school social studies for today's children. Harper & Row.
Čikaški stil citiranja (17. izdanje)Ord, John E. Elementary School Social Studies for Today's Children. New York: Harper & Row, 1972.
MLA način citiranja (9. izdanje)Ord, John E. Elementary School Social Studies for Today's Children. Harper & Row, 1972.
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