APA (7e ed.) Bronvermelding

Não informado. (1956). Practical Power Farming. British Power Farming Club.

Chicago (17e ed.) Bronvermelding

Não informado. Practical Power Farming. London: British Power Farming Club, 1956.

MLA (8e ed.) Bronvermelding

Não informado. Practical Power Farming. British Power Farming Club, 1956.

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