Cita APA (7a ed.)

Ellis, G. F. R., & Williams, R. M. (2000). Flat and curved space-times. Oxford University Press.

Cita Chicago Style (17a ed.)

Ellis, George Francis Rayner, y Ruth M. Williams. Flat and Curved Space-times. Oxford [etc.]: Oxford University Press, 2000.

Cita MLA (9a ed.)

Ellis, George Francis Rayner, y Ruth M. Williams. Flat and Curved Space-times. Oxford University Press, 2000.