APA-referens

Bak, P., & Bak. (1996). How nature works: The science of self-organized criticality. Copernicus.

Chicago-stil citat

Bak, P., och Bak. How Nature Works: The Science of Self-organized Criticality. New York, NY, USA: Copernicus, 1996.

MLA-referens

Bak, P., och Bak. How Nature Works: The Science of Self-organized Criticality. Copernicus, 1996.