APA (7e ed.) Bronvermelding

Não informado. (1987). Agricultural Administration and Extension. Elsevier Applied Science.

Chicago (17e ed.) Bronvermelding

Não informado. Agricultural Administration and Extension. Essex, Inglaterra: Elsevier Applied Science, 1987.

MLA (8e ed.) Bronvermelding

Não informado. Agricultural Administration and Extension. Elsevier Applied Science, 1987.

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