Quispe Guanca, J. L. (2007). Characterization of the environmental and productive impact of the different coffee certification standars in Costa Rica.
استشهاد بنمط شيكاغوQuispe Guanca, José L. Characterization of the Environmental and Productive Impact of the Different Coffee Certification Standars in Costa Rica. 2007.
MLA استشهادQuispe Guanca, José L. Characterization of the Environmental and Productive Impact of the Different Coffee Certification Standars in Costa Rica. 2007.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.