APA (7e ed.) Bronvermelding

Não informado. (1972). Shell in agriculture. Shell International Chemical Company.

Chicago (17e ed.) Bronvermelding

Não informado. Shell in Agriculture. London: Shell International Chemical Company, 1972.

MLA (8e ed.) Bronvermelding

Não informado. Shell in Agriculture. Shell International Chemical Company, 1972.

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