Dyfyniad APA

Campbell, N. A. (2007). Essential biology with physiology. San Francisco, CA: Pearson/​Benjamin Cummings.

Dyfyniad Arddull Chicago

Campbell, Neil A. Essential Biology With Physiology. San Francisco, CA: Pearson/​Benjamin Cummings, 2007.

Dyfyniad MLA

Campbell, Neil A. Essential Biology With Physiology. San Francisco, CA: Pearson/​Benjamin Cummings, 2007.

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