Fallas, G., Chacón, M., & Castro, J. (2009). Sustainability of agricultural systems on ecological and conventional farms in Costa Rica.
استشهاد بنمط شيكاغوFallas, Greivin, Mario Chacón, و Jonathan Castro. Sustainability of Agricultural Systems On Ecological and Conventional Farms in Costa Rica. 2009.
MLA استشهادFallas, Greivin, Mario Chacón, و Jonathan Castro. Sustainability of Agricultural Systems On Ecological and Conventional Farms in Costa Rica. 2009.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.