APA (7e ed.) Bronvermelding

Não informado. (1946). Extension service news. Virginia Polytechnic Institute, Agricultural Extension Service.

Chicago (17e ed.) Bronvermelding

Não informado. Extension Service News. Blacksburg, Va: Virginia Polytechnic Institute, Agricultural Extension Service, 1946.

MLA (8e ed.) Bronvermelding

Não informado. Extension Service News. Virginia Polytechnic Institute, Agricultural Extension Service, 1946.

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