Dyfyniad APA

Mason, K. A., Losos, J., Singer, S. R., Raven, P. H. B., & Johnson, R. B. B. (2011). Biology (Ninth edition.). McGraw-Hill.

Dyfyniad Arddull Chicago

Mason, Kenneth A., Jonathan Losos, Susan R. Singer, Peter H. Biology Raven, and Robert B. Biology Johnson. Biology. Ninth edition. Dubuque, IA: McGraw-Hill, 2011.

Dyfyniad MLA

Mason, Kenneth A., et al. Biology. Ninth edition. McGraw-Hill, 2011.

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