APA-referens

Crabtree, B. (2010). Search for sustainablity with no-till Bill in dryland agriculture. Crabtree Agriculture Consulting.

Chicago-stil citat

Crabtree, Bill. Search for Sustainablity With No-till Bill in Dryland Agriculture. Crabtree Agriculture Consulting, 2010.

MLA-referens

Crabtree, Bill. Search for Sustainablity With No-till Bill in Dryland Agriculture. Crabtree Agriculture Consulting, 2010.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.