Dyfyniad APA

Smith, M. W., & Penrose, R. (2013). Beating the odds: The life and times of E.A. Milne. Imperial College Press.

Dyfyniad Arddull Chicago

Smith, Meg Weston, and Roger Penrose. Beating the Odds: The Life and Times of E.A. Milne. London: Imperial College Press, 2013.

Dyfyniad MLA

Smith, Meg Weston, and Roger Penrose. Beating the Odds: The Life and Times of E.A. Milne. Imperial College Press, 2013.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.