APA (7e ed.) Bronvermelding

Não informado. (1975). Irrigation and drainage abstracts. Commonwealth Agricultural Bureau.

Chicago (17e ed.) Bronvermelding

Não informado. Irrigation and Drainage Abstracts. Slough, Inglaterra: Commonwealth Agricultural Bureau, 1975.

MLA (8e ed.) Bronvermelding

Não informado. Irrigation and Drainage Abstracts. Commonwealth Agricultural Bureau, 1975.

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