Cita APA (7a ed.)

Bely, P., Christian, C., & Roy, J. (2016). A question and answer guide to astronomy ([Revised 2016].). Cambridge University Press.

Cita Chicago Style (17a ed.)

Bely, Pierre-Yves, Carol Christian, y Jean-René Roy. A Question and Answer Guide to Astronomy. [Revised 2016]. Cambridge: Cambridge University Press, 2016.

Cita MLA (8a ed.)

Bely, Pierre-Yves, et al. A Question and Answer Guide to Astronomy. [Revised 2016]. Cambridge University Press, 2016.