Dyfyniad APA

Belk, C., & Maier, V. B. (2010). Biology: Science for life (3rd ed.). Benjamin Cummings.

Dyfyniad Arddull Chicago

Belk, Colleen, and Virginia Borden Maier. Biology: Science for Life. 3rd ed. San Francisco: Benjamin Cummings, 2010.

Dyfyniad MLA

Belk, Colleen, and Virginia Borden Maier. Biology: Science for Life. 3rd ed. Benjamin Cummings, 2010.

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