Hedström, I., Denzel, A., & Owens, G. (2006). Orchid bees as bio-indicators for organic coffee farms in Costa Rica: Does farm size affect their abundance?
استشهاد بنمط شيكاغوHedström, Ingemar, Andrew Denzel, و Gareth Owens. Orchid Bees As Bio-indicators for Organic Coffee Farms in Costa Rica: Does Farm Size Affect Their Abundance? 2006.
MLA استشهادHedström, Ingemar, Andrew Denzel, و Gareth Owens. Orchid Bees As Bio-indicators for Organic Coffee Farms in Costa Rica: Does Farm Size Affect Their Abundance? 2006.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.