Dyfyniad APA

Gregory, P. J. (2006). Plant roots: Growth, activity, and interaction with soils. Oxford: Blackwell Pub..

Dyfyniad Arddull Chicago

Gregory, Peter J. Plant Roots: Growth, Activity, and Interaction With Soils. Oxford: Blackwell Pub., 2006.

Dyfyniad MLA

Gregory, Peter J. Plant Roots: Growth, Activity, and Interaction With Soils. Oxford: Blackwell Pub., 2006.

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