van Keulen, H., Janssen, H., & de Koning, G. (1992). Input and Output Coefficients of Various Cropping and Livestock Systems in the European Communities. WRR.
Chicago Style (17th ed.) Citationvan Keulen, H., H. Janssen, and G.H.J de Koning. Input and Output Coefficients of Various Cropping and Livestock Systems in the European Communities. WRR, 1992.
MLA (9th ed.) Citationvan Keulen, H., et al. Input and Output Coefficients of Various Cropping and Livestock Systems in the European Communities. WRR, 1992.
Warning: These citations may not always be 100% accurate.