Crabtree, B. (2010). Search for sustainablity with no-till Bill in dryland agriculture. Crabtree Agriculture Consulting.
Citação norma ChicagoCrabtree, Bill. Search for Sustainablity With No-till Bill in Dryland Agriculture. Crabtree Agriculture Consulting, 2010.
Citação norma MLACrabtree, Bill. Search for Sustainablity With No-till Bill in Dryland Agriculture. Crabtree Agriculture Consulting, 2010.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.