Citazione Stile APA (7a Edizione)
Martínez-Torres, M. E. (2006). Organic coffee: Sustainable development by Mayan farmers. Ohio University Center for International Studies.
Citazione stile Chigago Style (17a edizione)
Martínez-Torres, Maria Elena. Organic Coffee: Sustainable Development by Mayan Farmers. Athens, Ohio: Ohio University Center for International Studies, 2006.
Citatione MLA (9a ed.)
Martínez-Torres, Maria Elena. Organic Coffee: Sustainable Development by Mayan Farmers. Ohio University Center for International Studies, 2006.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.