APA (7e ed.) Bronvermelding

Não informado. (1973). Irrigation Farmer Digest. Gardner Printing Publications.

Chicago (17e ed.) Bronvermelding

Não informado. Irrigation Farmer Digest. Melbourne, Australia: Gardner Printing Publications, 1973.

MLA (8e ed.) Bronvermelding

Não informado. Irrigation Farmer Digest. Gardner Printing Publications, 1973.

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