Dyfyniad APA

Boggs, S. (2009). Petrology of sedimentary rocks (2nd ed.). Cambridge University Press.

Dyfyniad Arddull Chicago

Boggs, Sam. Petrology of Sedimentary Rocks. 2nd ed. Cambridge: Cambridge University Press, 2009.

Dyfyniad MLA

Boggs, Sam. Petrology of Sedimentary Rocks. 2nd ed. Cambridge University Press, 2009.

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