APA引文

Ledezma, R. A., & Granados, R. (2008). Environmental Degradation and Coffee Growing in Tarrazú between 1970 and 2006.

Citación estilo Chicago

Ledezma, Rafael A., y Roberto Granados. Environmental Degradation and Coffee Growing in Tarrazú between 1970 and 2006. 2008.

MLA引文

Ledezma, Rafael A., y Roberto Granados. Environmental Degradation and Coffee Growing in Tarrazú between 1970 and 2006. 2008.

警告：这些引文格式不一定是100％准确.