in so far as such subjects are "explicable in terms of natural causation without resort to supernatural or divine intervention" Morris, 2003. p. 5
metmuseum.org
Finocchio, Ross. "Nineteenth-Century French Realism". In Heilbrunn Timeline of Art History. New York: The Metropolitan Museum of Art, 2000–. online (October 2004)
online-literature.com
„Victorian Literature”. The Literature Network. Приступљено 7. 10. 2013.CS1 одржавање: Формат датума (веза)