APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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

تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.