Dyfyniad APA

Meyer, D. L., & Davis, R. A. (2009). A sea without fish: Life in the Ordovician sea of the Cincinnati region. Indiana University Press.

Dyfyniad Arddull Chicago

Meyer, David L., and R. A. Davis. A Sea Without Fish: Life in the Ordovician Sea of the Cincinnati Region. Bloomington: Indiana University Press, 2009.

Dyfyniad MLA

Meyer, David L., and R. A. Davis. A Sea Without Fish: Life in the Ordovician Sea of the Cincinnati Region. Indiana University Press, 2009.

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