Simon, E. Common cause: A journal of one world. University of Chicago Press.
Chicago-viite (17. p.)Simon, Ernst. Common Cause: A Journal of One World. Chicago: University of Chicago Press.
MLA-viite (8. p.)Simon, Ernst. Common Cause: A Journal of One World. University of Chicago Press.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.