Cita APA (7a ed.)
Aschan, A. (2017). What role in the nitrogen supply do organic fertilizers have for organic farming? SLU/Dept. of Economics.
Cita Chicago Style (17a ed.)
Aschan, Arvid. What Role in the Nitrogen Supply Do Organic Fertilizers Have for Organic Farming? SLU/Dept. of Economics, 2017.
Cita MLA (9a ed.)
Aschan, Arvid. What Role in the Nitrogen Supply Do Organic Fertilizers Have for Organic Farming? SLU/Dept. of Economics, 2017.
Precaución: Estas citas no son 100% exactas.