APA (7e ed.) Bronvermelding

Não informado. (1913). Extension Bulletin. Washington State University, Cooperative Extension Service.

Chicago (17e ed.) Bronvermelding

Não informado. Extension Bulletin. Pullman, Wash: Washington State University, Cooperative Extension Service, 1913.

MLA (8e ed.) Bronvermelding

Não informado. Extension Bulletin. Washington State University, Cooperative Extension Service, 1913.

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