Dyfyniad APA

Clark, I. D., & Fritz Peter. (1997). Environmental Isotopes In Hydrogeology. CRC Press.

Dyfyniad Arddull Chicago

Clark, Ian D., and Fritz Peter. Environmental Isotopes In Hydrogeology. London: CRC Press, 1997.

Dyfyniad MLA

Clark, Ian D., and Fritz Peter. Environmental Isotopes In Hydrogeology. CRC Press, 1997.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.