APA (7e ed.) Bronvermelding

Não informado. (1976). Agricultural engineering abstracts. Commonwealth Agricultural Bureau.

Chicago (17e ed.) Bronvermelding

Não informado. Agricultural Engineering Abstracts. Farnham Royal, Inglaterra: Commonwealth Agricultural Bureau, 1976.

MLA (8e ed.) Bronvermelding

Não informado. Agricultural Engineering Abstracts. Commonwealth Agricultural Bureau, 1976.

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