APA-referens

Posamentier, A. S., & Lehmann, I. (2006). Pi: A biography of the world's most mysterious number. Universities Press.

Chicago-stil citat

Posamentier, Alfred S., och Ingmar Lehmann. Pi: A Biography of the World's Most Mysterious Number. Hyderabad: Universities Press, 2006.

MLA-referens

Posamentier, Alfred S., och Ingmar Lehmann. Pi: A Biography of the World's Most Mysterious Number. Universities Press, 2006.