Dyfyniad APA

Castro, P. (2010). Marine biology. New York: McGraw-Hill Education.

Dyfyniad Arddull Chicago

Castro, Peter. Marine Biology. New York: McGraw-Hill Education, 2010.

Dyfyniad MLA

Castro, Peter. Marine Biology. New York: McGraw-Hill Education, 2010.

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