APA
Fischer Gunther, Velthuizen Harrij Van Hizxnyik Eva wiberg David, . (2009). Potentially Obtainable Yields in the Semi-Arid Tropics. Austria: International Institute of Applied System Analysis.
Chicago
Fischer Gunther, Velthuizen Harrij Van Hizxnyik Eva wiberg David, . 2009. Potentially Obtainable Yields in the Semi-Arid Tropics. Austria: International Institute of Applied System Analysis.
Harvard
Fischer Gunther, Velthuizen Harrij Van Hizxnyik Eva wiberg David, . (2009). Potentially Obtainable Yields in the Semi-Arid Tropics. Austria: International Institute of Applied System Analysis.
MLA
Fischer Gunther, Velthuizen Harrij Van Hizxnyik Eva wiberg David, . Potentially Obtainable Yields in the Semi-Arid Tropics. Austria: International Institute of Applied System Analysis. 2009.