APA-referens

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

Chicago-stil citat

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

MLA-referens

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

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.