Dyfyniad APA
Carle, D. (2010). Introduction to earth, soil, and land in California. University of California Press.
Dyfyniad Arddull Chicago
Carle, David. Introduction to Earth, Soil, and Land in California. Berkeley: University of California Press, 2010.
Dyfyniad MLA
Carle, David. Introduction to Earth, Soil, and Land in California. University of California Press, 2010.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.