Grigg,D.B. The agricultural systems of the world an evolutionary approach. Cambridge Univ.Press.
Chicago Style (17th ed.) CitationGrigg,D.B. The Agricultural Systems of the World an Evolutionary Approach. Cambridge Univ.Press.
MLA (8th ed.) CitationGrigg,D.B. The Agricultural Systems of the World an Evolutionary Approach. Cambridge Univ.Press.
Warning: These citations may not always be 100% accurate.