Dyfyniad APA

Freeman, S., Allison, L. A., Black, M., & Podgorski, G. (2014). Biological science (Fifth edition.). Pearson.

Dyfyniad Arddull Chicago

Freeman, Scott, Lizabeth Ann Allison, Michael Black, and Greg Podgorski. Biological Science. Fifth edition. Boston: Pearson, 2014.

Dyfyniad MLA

Freeman, Scott, et al. Biological Science. Fifth edition. Pearson, 2014.

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