एपीए उद्धरण

Ketton-Cremer, R. Thomas Gray: A biography. Cambridge University Press.

शिकागो स्टाइल उद्धरण

Ketton-Cremer, R.W. Thomas Gray: A Biography. London: Cambridge University Press.

एमएलए उद्धरण

Ketton-Cremer, R.W. Thomas Gray: A Biography. Cambridge University Press.