Bely, P., Christian, C., & Roy, J. (2010). A question and answer guide to astronomy. Cambridge University Press.
Čikaški stil citiranjaBely, Pierre-Yves, Carol Christian, i Jean-René Roy. A Question and Answer Guide to Astronomy. Cambridge, UK: Cambridge University Press, 2010.
MLA način citiranjaBely, Pierre-Yves, et al. A Question and Answer Guide to Astronomy. Cambridge University Press, 2010.
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