Dyfyniad APA
Lodders, K., & Fegley, B. (1998). The planetary scientist's companion. Oxford University Press.
Dyfyniad Arddull Chicago
Lodders, Katharina, and Bruce Fegley. The Planetary Scientist's Companion. New York: Oxford University Press, 1998.
Dyfyniad MLA
Lodders, Katharina, and Bruce Fegley. The Planetary Scientist's Companion. Oxford University Press, 1998.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.