Kragh, H. (1990). Dirac: A scientific biography. Cambridge University Press.
Chicago Style aipamenaKragh, Helge. Dirac: A Scientific Biography. Cambridge [England]: Cambridge University Press, 1990.
MLA aipamenaKragh, Helge. Dirac: A Scientific Biography. Cambridge University Press, 1990.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.