Dyfyniad APA
Naylor, J. C. (2002). Out of the blue: A 24-hour skywatcher's guide. Cambridge University Press.
Dyfyniad Arddull Chicago
Naylor, John C. Out of the Blue: A 24-hour Skywatcher's Guide. Cambridge ; New York: Cambridge University Press, 2002.
Dyfyniad MLA
Naylor, John C. Out of the Blue: A 24-hour Skywatcher's Guide. Cambridge University Press, 2002.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.