Krishna, K. R. (2014). Agroecosystems: Soils, climate, crops, nutrient dynamics, and productivity. Oakville: Apple Academic Press.
Trích dẫn kiểu ChicagoKrishna, K. R. Agroecosystems: Soils, Climate, Crops, Nutrient Dynamics, and Productivity. Oakville: Apple Academic Press, 2014.
Trích dẫn MLAKrishna, K. R. Agroecosystems: Soils, Climate, Crops, Nutrient Dynamics, and Productivity. Oakville: Apple Academic Press, 2014.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.