Society for Visual Education. (1985). Chronology of the western world, 20th century. The Society.
Chicago Style aipamenaSociety for Visual Education. Chronology of the Western World, 20th Century. Chicago, IL: The Society, 1985.
MLA aipamenaSociety for Visual Education. Chronology of the Western World, 20th Century. The Society, 1985.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.