Bely, P., Christian, C., & Roy, J. (2010). A question and answer guide to astronomy. Cambridge University Press.
Chicago Style citaatBely, Pierre-Yves, Carol Christian, en Jean-René Roy. A Question and Answer Guide to Astronomy. Cambridge, UK: Cambridge University Press, 2010.
MLA citatieBely, Pierre-Yves, et al. A Question and Answer Guide to Astronomy. Cambridge University Press, 2010.
Let op: Deze citaties zijn niet altijd 100% accuraat.