APA (7e ed.) Bronvermelding

Cowling, E. (1937). A short introduction to consumers' co-operation. N.S.

Chicago (17e ed.) Bronvermelding

Cowling, Ellis. A Short Introduction to Consumers' Co-operation. Astigonish: N.S, 1937.

MLA (9e ed.) Bronvermelding

Cowling, Ellis. A Short Introduction to Consumers' Co-operation. N.S, 1937.

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