APA (7th ed.) Zitazioa
Smith, M. W., & Penrose, R. (2013). Beating the odds: The life and times of E.A. Milne. Imperial College Press.
Chicago Style (17th ed.) Zitazioa
Smith, Meg Weston, eta Roger Penrose. Beating the Odds: The Life and Times of E.A. Milne. London: Imperial College Press, 2013.
MLA (9th ed.) Zitazioa
Smith, Meg Weston, eta Roger Penrose. Beating the Odds: The Life and Times of E.A. Milne. Imperial College Press, 2013.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.