Barrow, J. D. (2007). New theories of everything. Oxford University Press.
Chicago Style aipamenaBarrow, John D. New Theories of Everything. New York: Oxford University Press, 2007.
MLA aipamenaBarrow, John D. New Theories of Everything. Oxford University Press, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.