APA (7e ed.) Bronvermelding

Não informado. Virginia farm economics. Virginia Polytechnic Institute, Department of Agricultural Economics and Rural Sociology.

Chicago (17e ed.) Bronvermelding

Não informado. Virginia Farm Economics. Blacksburg, Va: Virginia Polytechnic Institute, Department of Agricultural Economics and Rural Sociology.

MLA (8e ed.) Bronvermelding

Não informado. Virginia Farm Economics. Virginia Polytechnic Institute, Department of Agricultural Economics and Rural Sociology.

Let op: Deze citaties zijn niet altijd 100% accuraat.