APA (7e ed.) Bronvermelding

Não informado. (1924). Agricultural Progress. Agricultural Education Association.

Chicago (17e ed.) Bronvermelding

Não informado. Agricultural Progress. London: Agricultural Education Association, 1924.

MLA (8e ed.) Bronvermelding

Não informado. Agricultural Progress. Agricultural Education Association, 1924.

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