APA-viite

Quispe Guanca, J. L. (2007). Characterization of the environmental and productive impact of the different coffee certification standars in Costa Rica.

Chicago-tyylinen lähdeviittaus

Quispe Guanca, José L. Characterization of the Environmental and Productive Impact of the Different Coffee Certification Standars in Costa Rica. 2007.

MLA-viite

Quispe Guanca, José L. Characterization of the Environmental and Productive Impact of the Different Coffee Certification Standars in Costa Rica. 2007.

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