APA (7th ed.) Citation

Douglas, M. (1996). Natural symbols: Explorations in cosmology. Routledge.

Chicago Style (17th ed.) Citation

Douglas, Mary. Natural Symbols: Explorations in Cosmology. London ; New York: Routledge, 1996.

MLA (9th ed.) Citation

Douglas, Mary. Natural Symbols: Explorations in Cosmology. Routledge, 1996.