Dyfyniad APA
Norton, O. R., & Chitwood, L. A. (2008). Field guide to meteors and meteorites. Springer.
Dyfyniad Arddull Chicago
Norton, O. Richard, and Lawrence A. Chitwood. Field Guide to Meteors and Meteorites. London: Springer, 2008.
Dyfyniad MLA
Norton, O. Richard, and Lawrence A. Chitwood. Field Guide to Meteors and Meteorites. Springer, 2008.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.