Bengry, Justin. 2011. The Advertising Industry. In: James Overfield, ed. World History Encyclopedia, Era 7: The Age of Revolutions, 1750-1914. Santa Barbara, USA: ABC-Clio, pp. 741-742. ISBN 978-1851099740 [Book Section]

Bengry, Justin. 2011. Consumerism in North America and Europe. In: James Overfield, ed. World History Encyclopedia, Era 7: The Age of Revolutions, 1750-1914. Santa Barbara, USA: ABC-Clio, pp. 736-738. ISBN 978-1851099740 [Book Section]