APA-referens

Roger Penrose. Shadows of the Mind: Search for the Missing Science of Consciousness. London.

Chicago-stil citat

Roger Penrose. Shadows of the Mind: Search for the Missing Science of Consciousness. London.

MLA-referens

Roger Penrose. Shadows of the Mind: Search for the Missing Science of Consciousness. London.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.