Dyfyniad APA

Raven, P. H. a. (2005). Biology (Seventh edition.). Mcgraw Hill Higher Education.

Dyfyniad Arddull Chicago

Raven, Peter H.[et. al]. Biology. Seventh edition. Boston: Mcgraw Hill Higher Education, 2005.

Dyfyniad MLA

Raven, Peter H.[et. al]. Biology. Seventh edition. Mcgraw Hill Higher Education, 2005.

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