Style de citation APA (7e éd.)

Coles, P., & Ellis, G. (1997). Is the Universe Open or Closed?: The Density of Matter in the Universe. Cambridge University Press.

Style de citation Chicago (17e éd.)

Coles, Peter, et George Ellis. Is the Universe Open or Closed?: The Density of Matter in the Universe. Cambridge, United Kingdom: Cambridge University Press, 1997.

Style de citation MLA (9e éd.)

Coles, Peter, et George Ellis. Is the Universe Open or Closed?: The Density of Matter in the Universe. Cambridge University Press, 1997.