Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (8th εκδ.)

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