APA引文

Cornwell, E. (2014). Effects of different agricultural systems on soil quality in Northern Limón province, Costa Rica.

Citación estilo Chicago

Cornwell, Emma. Effects of Different Agricultural Systems On Soil Quality in Northern Limón Province, Costa Rica. 2014.

MLA引文

Cornwell, Emma. Effects of Different Agricultural Systems On Soil Quality in Northern Limón Province, Costa Rica. 2014.

警告：这些引文格式不一定是100％准确.