Não informado. Virginia farm economics. Virginia Polytechnic Institute, Department of Agricultural Economics and Rural Sociology.
Style de citation Chicago (17e éd.)Não informado. Virginia Farm Economics. Blacksburg, Va: Virginia Polytechnic Institute, Department of Agricultural Economics and Rural Sociology.
Style de citation MLA (8e éd.)Não informado. Virginia Farm Economics. Virginia Polytechnic Institute, Department of Agricultural Economics and Rural Sociology.
Attention : ces citations peuvent ne pas être correctes à 100%.