APA (7e ed.) Bronvermelding

Não informado. Extension Circular. North Carolina Agricultural Extension Service.

Chicago (17e ed.) Bronvermelding

Não informado. Extension Circular. West Raleigh, NC: North Carolina Agricultural Extension Service.

MLA (8e ed.) Bronvermelding

Não informado. Extension Circular. North Carolina Agricultural Extension Service.

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