Naylor, J. C. (2002). Out of the blue: A 24-hour skywatcher's guide. Cambridge University Press.
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Chicago-čujuhus (17. p.)
Naylor, John C. Out of the Blue: A 24-hour Skywatcher's Guide. Cambridge ; New York: Cambridge University Press, 2002.
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MLA-čujuhus (9. p.)
Naylor, John C. Out of the Blue: A 24-hour Skywatcher's Guide. Cambridge University Press, 2002.
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