APA (7e ed.) Bronvermelding

Penny, E. M. (1932). The co-operative movement and the consumer. York: National Guild of Co-operators (NGC).

Chicago (17e ed.) Bronvermelding

Penny, Edna M. The Co-operative Movement and the Consumer. York: National Guild of Co-operators (NGC), 1932.

MLA (8e ed.) Bronvermelding

Penny, Edna M. The Co-operative Movement and the Consumer. York: National Guild of Co-operators (NGC), 1932.